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[binutils-gdb.git] / bfd / elfxx-sparc.c
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1 /* SPARC-specific support for ELF
2 Copyright (C) 2005-2022 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
22 /* This file handles functionality common to the different SPARC ABI's. */
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "bfdlink.h"
27 #include "libbfd.h"
28 #include "libiberty.h"
29 #include "elf-bfd.h"
30 #include "elf/sparc.h"
31 #include "opcode/sparc.h"
32 #include "elfxx-sparc.h"
33 #include "elf-vxworks.h"
34 #include "objalloc.h"
35 #include "hashtab.h"
37 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
38 #define MINUS_ONE (~ (bfd_vma) 0)
40 #define ABI_64_P(abfd) \
41 (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS64)
43 /* The relocation "howto" table. */
45 /* Utility for performing the standard initial work of an instruction
46 relocation.
47 *PRELOCATION will contain the relocated item.
48 *PINSN will contain the instruction from the input stream.
49 If the result is `bfd_reloc_other' the caller can continue with
50 performing the relocation. Otherwise it must stop and return the
51 value to its caller. */
53 static bfd_reloc_status_type
54 init_insn_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
55 void * data, asection *input_section, bfd *output_bfd,
56 bfd_vma *prelocation, bfd_vma *pinsn)
58 bfd_vma relocation;
59 reloc_howto_type *howto = reloc_entry->howto;
61 if (output_bfd != (bfd *) NULL
62 && (symbol->flags & BSF_SECTION_SYM) == 0
63 && (! howto->partial_inplace
64 || reloc_entry->addend == 0))
66 reloc_entry->address += input_section->output_offset;
67 return bfd_reloc_ok;
70 /* This works because partial_inplace is FALSE. */
71 if (output_bfd != NULL)
72 return bfd_reloc_continue;
74 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
75 return bfd_reloc_outofrange;
77 relocation = (symbol->value
78 + symbol->section->output_section->vma
79 + symbol->section->output_offset);
80 relocation += reloc_entry->addend;
81 if (howto->pc_relative)
83 relocation -= (input_section->output_section->vma
84 + input_section->output_offset);
85 relocation -= reloc_entry->address;
88 *prelocation = relocation;
89 *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
90 return bfd_reloc_other;
93 /* For unsupported relocs. */
95 static bfd_reloc_status_type
96 sparc_elf_notsup_reloc (bfd *abfd ATTRIBUTE_UNUSED,
97 arelent *reloc_entry ATTRIBUTE_UNUSED,
98 asymbol *symbol ATTRIBUTE_UNUSED,
99 void * data ATTRIBUTE_UNUSED,
100 asection *input_section ATTRIBUTE_UNUSED,
101 bfd *output_bfd ATTRIBUTE_UNUSED,
102 char **error_message ATTRIBUTE_UNUSED)
104 return bfd_reloc_notsupported;
107 /* Handle the WDISP16 reloc. */
109 static bfd_reloc_status_type
110 sparc_elf_wdisp16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
111 void * data, asection *input_section, bfd *output_bfd,
112 char **error_message ATTRIBUTE_UNUSED)
114 bfd_vma relocation;
115 bfd_vma insn;
116 bfd_reloc_status_type status;
118 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
119 input_section, output_bfd, &relocation, &insn);
120 if (status != bfd_reloc_other)
121 return status;
123 insn &= ~ (bfd_vma) 0x303fff;
124 insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
125 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
127 if ((bfd_signed_vma) relocation < - 0x40000
128 || (bfd_signed_vma) relocation > 0x3ffff)
129 return bfd_reloc_overflow;
130 else
131 return bfd_reloc_ok;
134 /* Handle the WDISP10 reloc. */
136 static bfd_reloc_status_type
137 sparc_elf_wdisp10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
138 void * data, asection *input_section, bfd *output_bfd,
139 char **error_message ATTRIBUTE_UNUSED)
141 bfd_vma relocation;
142 bfd_vma insn;
143 bfd_reloc_status_type status;
145 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
146 input_section, output_bfd, &relocation, &insn);
147 if (status != bfd_reloc_other)
148 return status;
150 insn &= ~ (bfd_vma) 0x181fe0;
151 insn |= (((relocation >> 2) & 0x300) << 11)
152 | (((relocation >> 2) & 0xff) << 5);
153 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
155 if ((bfd_signed_vma) relocation < - 0x1000
156 || (bfd_signed_vma) relocation > 0xfff)
157 return bfd_reloc_overflow;
158 else
159 return bfd_reloc_ok;
162 /* Handle the HIX22 reloc. */
164 static bfd_reloc_status_type
165 sparc_elf_hix22_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
166 void * data, asection *input_section, bfd *output_bfd,
167 char **error_message ATTRIBUTE_UNUSED)
169 bfd_vma relocation;
170 bfd_vma insn;
171 bfd_reloc_status_type status;
173 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
174 input_section, output_bfd, &relocation, &insn);
175 if (status != bfd_reloc_other)
176 return status;
178 relocation ^= MINUS_ONE;
179 insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
180 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
182 if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
183 return bfd_reloc_overflow;
184 else
185 return bfd_reloc_ok;
188 /* Handle the LOX10 reloc. */
190 static bfd_reloc_status_type
191 sparc_elf_lox10_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
192 void * data, asection *input_section, bfd *output_bfd,
193 char **error_message ATTRIBUTE_UNUSED)
195 bfd_vma relocation;
196 bfd_vma insn;
197 bfd_reloc_status_type status;
199 status = init_insn_reloc (abfd, reloc_entry, symbol, data,
200 input_section, output_bfd, &relocation, &insn);
201 if (status != bfd_reloc_other)
202 return status;
204 insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
205 bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
207 return bfd_reloc_ok;
210 static reloc_howto_type _bfd_sparc_elf_howto_table[] =
212 HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", false,0,0x00000000,true),
213 HOWTO(R_SPARC_8, 0,1, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", false,0,0x000000ff,true),
214 HOWTO(R_SPARC_16, 0,2,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", false,0,0x0000ffff,true),
215 HOWTO(R_SPARC_32, 0,4,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true),
216 HOWTO(R_SPARC_DISP8, 0,1, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true),
217 HOWTO(R_SPARC_DISP16, 0,2,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true),
218 HOWTO(R_SPARC_DISP32, 0,4,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0xffffffff,true),
219 HOWTO(R_SPARC_WDISP30, 2,4,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true),
220 HOWTO(R_SPARC_WDISP22, 2,4,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true),
221 HOWTO(R_SPARC_HI22, 10,4,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true),
222 HOWTO(R_SPARC_22, 0,4,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", false,0,0x003fffff,true),
223 HOWTO(R_SPARC_13, 0,4,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", false,0,0x00001fff,true),
224 HOWTO(R_SPARC_LO10, 0,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", false,0,0x000003ff,true),
225 HOWTO(R_SPARC_GOT10, 0,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", false,0,0x000003ff,true),
226 HOWTO(R_SPARC_GOT13, 0,4,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", false,0,0x00001fff,true),
227 HOWTO(R_SPARC_GOT22, 10,4,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", false,0,0x003fffff,true),
228 HOWTO(R_SPARC_PC10, 0,4,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", false,0,0x000003ff,true),
229 HOWTO(R_SPARC_PC22, 10,4,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", false,0,0x003fffff,true),
230 HOWTO(R_SPARC_WPLT30, 2,4,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", false,0,0x3fffffff,true),
231 HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", false,0,0x00000000,true),
232 HOWTO(R_SPARC_GLOB_DAT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
233 HOWTO(R_SPARC_JMP_SLOT, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",false,0,0x00000000,true),
234 HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true),
235 HOWTO(R_SPARC_UA32, 0,4,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true),
236 HOWTO(R_SPARC_PLT32, 0,4,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", false,0,0xffffffff,true),
237 HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true),
238 HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true),
239 HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true),
240 HOWTO(R_SPARC_PCPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT22", false,0,0x00000000,true),
241 HOWTO(R_SPARC_PCPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT10", false,0,0x00000000,true),
242 HOWTO(R_SPARC_10, 0,4,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", false,0,0x000003ff,true),
243 HOWTO(R_SPARC_11, 0,4,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", false,0,0x000007ff,true),
244 HOWTO(R_SPARC_64, 0,8,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_64", false,0,MINUS_ONE, true),
245 HOWTO(R_SPARC_OLO10, 0,4,13,false,0,complain_overflow_signed, sparc_elf_notsup_reloc, "R_SPARC_OLO10", false,0,0x00001fff,true),
246 HOWTO(R_SPARC_HH22, 42,4,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_HH22", false,0,0x003fffff,true),
247 HOWTO(R_SPARC_HM10, 32,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HM10", false,0,0x000003ff,true),
248 HOWTO(R_SPARC_LM22, 10,4,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LM22", false,0,0x003fffff,true),
249 HOWTO(R_SPARC_PC_HH22, 42,4,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_PC_HH22", false,0,0x003fffff,true),
250 HOWTO(R_SPARC_PC_HM10, 32,4,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_HM10", false,0,0x000003ff,true),
251 HOWTO(R_SPARC_PC_LM22, 10,4,22,true, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC_LM22", false,0,0x003fffff,true),
252 HOWTO(R_SPARC_WDISP16, 2,4,16,true, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
253 HOWTO(R_SPARC_WDISP19, 2,4,19,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", false,0,0x0007ffff,true),
254 HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",false,0,0x00000000,true),
255 HOWTO(R_SPARC_7, 0,4, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", false,0,0x0000007f,true),
256 HOWTO(R_SPARC_5, 0,4, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true),
257 HOWTO(R_SPARC_6, 0,4, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true),
258 HOWTO(R_SPARC_DISP64, 0,8,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true),
259 HOWTO(R_SPARC_PLT64, 0,8,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, true),
260 HOWTO(R_SPARC_HIX22, 0,8, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false),
261 HOWTO(R_SPARC_LOX10, 0,8, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false),
262 HOWTO(R_SPARC_H44, 22,4,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false),
263 HOWTO(R_SPARC_M44, 12,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_M44", false,0,0x000003ff,false),
264 HOWTO(R_SPARC_L44, 0,4,13,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_L44", false,0,0x00000fff,false),
265 HOWTO(R_SPARC_REGISTER, 0,8, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false),
266 HOWTO(R_SPARC_UA64, 0,8,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA64", false,0,MINUS_ONE, true),
267 HOWTO(R_SPARC_UA16, 0,2,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", false,0,0x0000ffff,true),
268 HOWTO(R_SPARC_TLS_GD_HI22,10,4,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_HI22",false,0,0x003fffff,true),
269 HOWTO(R_SPARC_TLS_GD_LO10,0,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_LO10",false,0,0x000003ff,true),
270 HOWTO(R_SPARC_TLS_GD_ADD,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_ADD",false,0,0x00000000,true),
271 HOWTO(R_SPARC_TLS_GD_CALL,2,4,30,true,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_GD_CALL",false,0,0x3fffffff,true),
272 HOWTO(R_SPARC_TLS_LDM_HI22,10,4,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_HI22",false,0,0x003fffff,true),
273 HOWTO(R_SPARC_TLS_LDM_LO10,0,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_LO10",false,0,0x000003ff,true),
274 HOWTO(R_SPARC_TLS_LDM_ADD,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_ADD",false,0,0x00000000,true),
275 HOWTO(R_SPARC_TLS_LDM_CALL,2,4,30,true,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_TLS_LDM_CALL",false,0,0x3fffffff,true),
276 HOWTO(R_SPARC_TLS_LDO_HIX22,0,4,0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_TLS_LDO_HIX22",false,0,0x003fffff, false),
277 HOWTO(R_SPARC_TLS_LDO_LOX10,0,4,0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LDO_LOX10",false,0,0x000003ff, false),
278 HOWTO(R_SPARC_TLS_LDO_ADD,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_LDO_ADD",false,0,0x00000000,true),
279 HOWTO(R_SPARC_TLS_IE_HI22,10,4,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_HI22",false,0,0x003fffff,true),
280 HOWTO(R_SPARC_TLS_IE_LO10,0,4,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LO10",false,0,0x000003ff,true),
281 HOWTO(R_SPARC_TLS_IE_LD,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LD",false,0,0x00000000,true),
282 HOWTO(R_SPARC_TLS_IE_LDX,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_LDX",false,0,0x00000000,true),
283 HOWTO(R_SPARC_TLS_IE_ADD,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_IE_ADD",false,0,0x00000000,true),
284 HOWTO(R_SPARC_TLS_LE_HIX22,0,4,0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_TLS_LE_HIX22",false,0,0x003fffff, false),
285 HOWTO(R_SPARC_TLS_LE_LOX10,0,4,0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_TLS_LE_LOX10",false,0,0x000003ff, false),
286 HOWTO(R_SPARC_TLS_DTPMOD32,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD32",false,0,0x00000000,true),
287 HOWTO(R_SPARC_TLS_DTPMOD64,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_DTPMOD64",false,0,0x00000000,true),
288 HOWTO(R_SPARC_TLS_DTPOFF32,0,4,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF32",false,0,0xffffffff,true),
289 HOWTO(R_SPARC_TLS_DTPOFF64,0,8,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_TLS_DTPOFF64",false,0,MINUS_ONE,true),
290 HOWTO(R_SPARC_TLS_TPOFF32,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF32",false,0,0x00000000,true),
291 HOWTO(R_SPARC_TLS_TPOFF64,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_TLS_TPOFF64",false,0,0x00000000,true),
292 HOWTO(R_SPARC_GOTDATA_HIX22,0,4,0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_HIX22",false,0,0x003fffff, false),
293 HOWTO(R_SPARC_GOTDATA_LOX10,0,4,0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_LOX10",false,0,0x000003ff, false),
294 HOWTO(R_SPARC_GOTDATA_OP_HIX22,0,4,0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,"R_SPARC_GOTDATA_OP_HIX22",false,0,0x003fffff, false),
295 HOWTO(R_SPARC_GOTDATA_OP_LOX10,0,4,0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_GOTDATA_OP_LOX10",false,0,0x000003ff, false),
296 HOWTO(R_SPARC_GOTDATA_OP,0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOTDATA_OP",false,0,0x00000000,true),
297 HOWTO(R_SPARC_H34,12,4,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc,"R_SPARC_H34",false,0,0x003fffff,false),
298 HOWTO(R_SPARC_SIZE32,0,4,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE32",false,0,0xffffffff,true),
299 HOWTO(R_SPARC_SIZE64,0,8,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_SIZE64",false,0,MINUS_ONE, true),
300 HOWTO(R_SPARC_WDISP10,2,4,10,true, 0,complain_overflow_signed,sparc_elf_wdisp10_reloc,"R_SPARC_WDISP10",false,0,0x00000000,true),
302 static reloc_howto_type sparc_jmp_irel_howto =
303 HOWTO(R_SPARC_JMP_IREL, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_IREL",false,0,0x00000000,true);
304 static reloc_howto_type sparc_irelative_howto =
305 HOWTO(R_SPARC_IRELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_IRELATIVE",false,0,0x00000000,true);
306 static reloc_howto_type sparc_vtinherit_howto =
307 HOWTO (R_SPARC_GNU_VTINHERIT, 0,4,0,false,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", false,0, 0, false);
308 static reloc_howto_type sparc_vtentry_howto =
309 HOWTO (R_SPARC_GNU_VTENTRY, 0,4,0,false,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", false,0,0, false);
310 static reloc_howto_type sparc_rev32_howto =
311 HOWTO(R_SPARC_REV32, 0,4,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", false,0,0xffffffff,true);
313 reloc_howto_type *
314 _bfd_sparc_elf_reloc_type_lookup (bfd *abfd,
315 bfd_reloc_code_real_type code)
317 /* We explicitly handle each relocation type in the switch
318 instead of using a lookup table for efficiency. */
319 switch (code)
321 case BFD_RELOC_NONE:
322 return &_bfd_sparc_elf_howto_table[R_SPARC_NONE];
324 case BFD_RELOC_8:
325 return &_bfd_sparc_elf_howto_table[R_SPARC_8];
327 case BFD_RELOC_16:
328 return &_bfd_sparc_elf_howto_table[R_SPARC_16];
330 case BFD_RELOC_32:
331 return &_bfd_sparc_elf_howto_table[R_SPARC_32];
333 case BFD_RELOC_8_PCREL:
334 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP8];
336 case BFD_RELOC_16_PCREL:
337 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP16];
339 case BFD_RELOC_32_PCREL:
340 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP32];
342 case BFD_RELOC_32_PCREL_S2:
343 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP30];
345 case BFD_RELOC_SPARC_WDISP22:
346 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP22];
348 case BFD_RELOC_HI22:
349 return &_bfd_sparc_elf_howto_table[R_SPARC_HI22];
351 case BFD_RELOC_SPARC22:
352 return &_bfd_sparc_elf_howto_table[R_SPARC_22];
354 case BFD_RELOC_SPARC13:
355 return &_bfd_sparc_elf_howto_table[R_SPARC_13];
357 case BFD_RELOC_LO10:
358 return &_bfd_sparc_elf_howto_table[R_SPARC_LO10];
360 case BFD_RELOC_SPARC_GOT10:
361 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT10];
363 case BFD_RELOC_SPARC_GOT13:
364 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT13];
366 case BFD_RELOC_SPARC_GOT22:
367 return &_bfd_sparc_elf_howto_table[R_SPARC_GOT22];
369 case BFD_RELOC_SPARC_PC10:
370 return &_bfd_sparc_elf_howto_table[R_SPARC_PC10];
372 case BFD_RELOC_SPARC_PC22:
373 return &_bfd_sparc_elf_howto_table[R_SPARC_PC22];
375 case BFD_RELOC_SPARC_WPLT30:
376 return &_bfd_sparc_elf_howto_table[R_SPARC_WPLT30];
378 case BFD_RELOC_SPARC_COPY:
379 return &_bfd_sparc_elf_howto_table[R_SPARC_COPY];
381 case BFD_RELOC_SPARC_GLOB_DAT:
382 return &_bfd_sparc_elf_howto_table[R_SPARC_GLOB_DAT];
384 case BFD_RELOC_SPARC_JMP_SLOT:
385 return &_bfd_sparc_elf_howto_table[R_SPARC_JMP_SLOT];
387 case BFD_RELOC_SPARC_RELATIVE:
388 return &_bfd_sparc_elf_howto_table[R_SPARC_RELATIVE];
390 case BFD_RELOC_SPARC_UA32:
391 return &_bfd_sparc_elf_howto_table[R_SPARC_UA32];
393 case BFD_RELOC_SPARC_PLT32:
394 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT32];
396 case BFD_RELOC_SPARC_10:
397 return &_bfd_sparc_elf_howto_table[R_SPARC_10];
399 case BFD_RELOC_SPARC_11:
400 return &_bfd_sparc_elf_howto_table[R_SPARC_11];
402 case BFD_RELOC_SPARC_64:
403 return &_bfd_sparc_elf_howto_table[R_SPARC_64];
405 case BFD_RELOC_SPARC_OLO10:
406 return &_bfd_sparc_elf_howto_table[R_SPARC_OLO10];
408 case BFD_RELOC_SPARC_HH22:
409 return &_bfd_sparc_elf_howto_table[R_SPARC_HH22];
411 case BFD_RELOC_SPARC_HM10:
412 return &_bfd_sparc_elf_howto_table[R_SPARC_HM10];
414 case BFD_RELOC_SPARC_LM22:
415 return &_bfd_sparc_elf_howto_table[R_SPARC_LM22];
417 case BFD_RELOC_SPARC_PC_HH22:
418 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HH22];
420 case BFD_RELOC_SPARC_PC_HM10:
421 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_HM10];
423 case BFD_RELOC_SPARC_PC_LM22:
424 return &_bfd_sparc_elf_howto_table[R_SPARC_PC_LM22];
426 case BFD_RELOC_SPARC_WDISP16:
427 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP16];
429 case BFD_RELOC_SPARC_WDISP19:
430 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP19];
432 case BFD_RELOC_SPARC_7:
433 return &_bfd_sparc_elf_howto_table[R_SPARC_7];
435 case BFD_RELOC_SPARC_5:
436 return &_bfd_sparc_elf_howto_table[R_SPARC_5];
438 case BFD_RELOC_SPARC_6:
439 return &_bfd_sparc_elf_howto_table[R_SPARC_6];
441 case BFD_RELOC_SPARC_DISP64:
442 return &_bfd_sparc_elf_howto_table[R_SPARC_DISP64];
444 case BFD_RELOC_SPARC_PLT64:
445 return &_bfd_sparc_elf_howto_table[R_SPARC_PLT64];
447 case BFD_RELOC_SPARC_HIX22:
448 return &_bfd_sparc_elf_howto_table[R_SPARC_HIX22];
450 case BFD_RELOC_SPARC_LOX10:
451 return &_bfd_sparc_elf_howto_table[R_SPARC_LOX10];
453 case BFD_RELOC_SPARC_H44:
454 return &_bfd_sparc_elf_howto_table[R_SPARC_H44];
456 case BFD_RELOC_SPARC_M44:
457 return &_bfd_sparc_elf_howto_table[R_SPARC_M44];
459 case BFD_RELOC_SPARC_L44:
460 return &_bfd_sparc_elf_howto_table[R_SPARC_L44];
462 case BFD_RELOC_SPARC_REGISTER:
463 return &_bfd_sparc_elf_howto_table[R_SPARC_REGISTER];
465 case BFD_RELOC_SPARC_UA64:
466 return &_bfd_sparc_elf_howto_table[R_SPARC_UA64];
468 case BFD_RELOC_SPARC_UA16:
469 return &_bfd_sparc_elf_howto_table[R_SPARC_UA16];
471 case BFD_RELOC_SPARC_TLS_GD_HI22:
472 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_HI22];
474 case BFD_RELOC_SPARC_TLS_GD_LO10:
475 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_LO10];
477 case BFD_RELOC_SPARC_TLS_GD_ADD:
478 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_ADD];
480 case BFD_RELOC_SPARC_TLS_GD_CALL:
481 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_GD_CALL];
483 case BFD_RELOC_SPARC_TLS_LDM_HI22:
484 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_HI22];
486 case BFD_RELOC_SPARC_TLS_LDM_LO10:
487 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_LO10];
489 case BFD_RELOC_SPARC_TLS_LDM_ADD:
490 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_ADD];
492 case BFD_RELOC_SPARC_TLS_LDM_CALL:
493 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDM_CALL];
495 case BFD_RELOC_SPARC_TLS_LDO_HIX22:
496 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_HIX22];
498 case BFD_RELOC_SPARC_TLS_LDO_LOX10:
499 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_LOX10];
501 case BFD_RELOC_SPARC_TLS_LDO_ADD:
502 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LDO_ADD];
504 case BFD_RELOC_SPARC_TLS_IE_HI22:
505 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_HI22];
507 case BFD_RELOC_SPARC_TLS_IE_LO10:
508 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LO10];
510 case BFD_RELOC_SPARC_TLS_IE_LD:
511 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LD];
513 case BFD_RELOC_SPARC_TLS_IE_LDX:
514 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_LDX];
516 case BFD_RELOC_SPARC_TLS_IE_ADD:
517 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_IE_ADD];
519 case BFD_RELOC_SPARC_TLS_LE_HIX22:
520 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_HIX22];
522 case BFD_RELOC_SPARC_TLS_LE_LOX10:
523 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_LE_LOX10];
525 case BFD_RELOC_SPARC_TLS_DTPMOD32:
526 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD32];
528 case BFD_RELOC_SPARC_TLS_DTPMOD64:
529 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPMOD64];
531 case BFD_RELOC_SPARC_TLS_DTPOFF32:
532 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF32];
534 case BFD_RELOC_SPARC_TLS_DTPOFF64:
535 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_DTPOFF64];
537 case BFD_RELOC_SPARC_TLS_TPOFF32:
538 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF32];
540 case BFD_RELOC_SPARC_TLS_TPOFF64:
541 return &_bfd_sparc_elf_howto_table[R_SPARC_TLS_TPOFF64];
543 case BFD_RELOC_SPARC_GOTDATA_HIX22:
544 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_HIX22];
546 case BFD_RELOC_SPARC_GOTDATA_LOX10:
547 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_LOX10];
549 case BFD_RELOC_SPARC_GOTDATA_OP_HIX22:
550 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_HIX22];
552 case BFD_RELOC_SPARC_GOTDATA_OP_LOX10:
553 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP_LOX10];
555 case BFD_RELOC_SPARC_GOTDATA_OP:
556 return &_bfd_sparc_elf_howto_table[R_SPARC_GOTDATA_OP];
558 case BFD_RELOC_SPARC_H34:
559 return &_bfd_sparc_elf_howto_table[R_SPARC_H34];
561 case BFD_RELOC_SPARC_SIZE32:
562 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE32];
564 case BFD_RELOC_SPARC_SIZE64:
565 return &_bfd_sparc_elf_howto_table[R_SPARC_SIZE64];
567 case BFD_RELOC_SPARC_WDISP10:
568 return &_bfd_sparc_elf_howto_table[R_SPARC_WDISP10];
570 case BFD_RELOC_SPARC_JMP_IREL:
571 return &sparc_jmp_irel_howto;
573 case BFD_RELOC_SPARC_IRELATIVE:
574 return &sparc_irelative_howto;
576 case BFD_RELOC_VTABLE_INHERIT:
577 return &sparc_vtinherit_howto;
579 case BFD_RELOC_VTABLE_ENTRY:
580 return &sparc_vtentry_howto;
582 case BFD_RELOC_SPARC_REV32:
583 return &sparc_rev32_howto;
585 default:
586 break;
588 /* xgettext:c-format */
589 _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code);
590 bfd_set_error (bfd_error_bad_value);
591 return NULL;
594 reloc_howto_type *
595 _bfd_sparc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
596 const char *r_name)
598 unsigned int i;
600 for (i = 0; i < ARRAY_SIZE (_bfd_sparc_elf_howto_table); i++)
601 if (_bfd_sparc_elf_howto_table[i].name != NULL
602 && strcasecmp (_bfd_sparc_elf_howto_table[i].name, r_name) == 0)
603 return &_bfd_sparc_elf_howto_table[i];
605 if (strcasecmp (sparc_vtinherit_howto.name, r_name) == 0)
606 return &sparc_vtinherit_howto;
607 if (strcasecmp (sparc_vtentry_howto.name, r_name) == 0)
608 return &sparc_vtentry_howto;
609 if (strcasecmp (sparc_rev32_howto.name, r_name) == 0)
610 return &sparc_rev32_howto;
612 return NULL;
615 reloc_howto_type *
616 _bfd_sparc_elf_info_to_howto_ptr (bfd *abfd ATTRIBUTE_UNUSED,
617 unsigned int r_type)
619 switch (r_type)
621 case R_SPARC_JMP_IREL:
622 return &sparc_jmp_irel_howto;
624 case R_SPARC_IRELATIVE:
625 return &sparc_irelative_howto;
627 case R_SPARC_GNU_VTINHERIT:
628 return &sparc_vtinherit_howto;
630 case R_SPARC_GNU_VTENTRY:
631 return &sparc_vtentry_howto;
633 case R_SPARC_REV32:
634 return &sparc_rev32_howto;
636 default:
637 if (r_type >= (unsigned int) R_SPARC_max_std)
639 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
640 abfd, r_type);
641 bfd_set_error (bfd_error_bad_value);
642 return NULL;
644 return &_bfd_sparc_elf_howto_table[r_type];
648 /* Both 32-bit and 64-bit sparc encode this in an identical manner,
649 so just take advantage of that. */
650 #define SPARC_ELF_R_TYPE(r_info) \
651 ((r_info) & 0xff)
653 bool
654 _bfd_sparc_elf_info_to_howto (bfd *abfd, arelent *cache_ptr,
655 Elf_Internal_Rela *dst)
657 unsigned int r_type = SPARC_ELF_R_TYPE (dst->r_info);
659 if ((cache_ptr->howto = _bfd_sparc_elf_info_to_howto_ptr (abfd, r_type)) == NULL)
661 bfd_set_error (bfd_error_bad_value);
662 return false;
664 return true;
668 /* The nop opcode we use. */
669 #define SPARC_NOP 0x01000000
671 #define SPARC_INSN_BYTES 4
673 /* Is an undefined weak symbol resolved to 0 ?
674 Reference to an undefined weak symbol is resolved to 0 when
675 building an executable if it isn't dynamic and
676 1. Has non-GOT/non-PLT relocations in text section.
678 2. Has no GOT/PLT relocation. */
679 #define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
680 ((EH)->elf.root.type == bfd_link_hash_undefweak \
681 && bfd_link_executable (INFO) \
682 && (_bfd_sparc_elf_hash_table (INFO)->interp == NULL \
683 || !(INFO)->dynamic_undefined_weak \
684 || (EH)->has_non_got_reloc \
685 || !(EH)->has_got_reloc))
687 /* SPARC ELF linker hash entry. */
689 struct _bfd_sparc_elf_link_hash_entry
691 struct elf_link_hash_entry elf;
693 #define GOT_UNKNOWN 0
694 #define GOT_NORMAL 1
695 #define GOT_TLS_GD 2
696 #define GOT_TLS_IE 3
697 unsigned char tls_type;
699 /* Symbol has GOT or PLT relocations. */
700 unsigned int has_got_reloc : 1;
702 /* Symbol has old-style, non-relaxable GOT relocations. */
703 unsigned int has_old_style_got_reloc : 1;
705 /* Symbol has non-GOT/non-PLT relocations in text sections. */
706 unsigned int has_non_got_reloc : 1;
710 #define _bfd_sparc_elf_hash_entry(ent) ((struct _bfd_sparc_elf_link_hash_entry *)(ent))
712 struct _bfd_sparc_elf_obj_tdata
714 struct elf_obj_tdata root;
716 /* tls_type for each local got entry. */
717 char *local_got_tls_type;
719 /* TRUE if TLS GD relocs has been seen for this object. */
720 bool has_tlsgd;
723 #define _bfd_sparc_elf_tdata(abfd) \
724 ((struct _bfd_sparc_elf_obj_tdata *) (abfd)->tdata.any)
726 #define _bfd_sparc_elf_local_got_tls_type(abfd) \
727 (_bfd_sparc_elf_tdata (abfd)->local_got_tls_type)
729 #define is_sparc_elf(bfd) \
730 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
731 && elf_tdata (bfd) != NULL \
732 && elf_object_id (bfd) == SPARC_ELF_DATA)
734 bool
735 _bfd_sparc_elf_mkobject (bfd *abfd)
737 return bfd_elf_allocate_object (abfd, sizeof (struct _bfd_sparc_elf_obj_tdata),
738 SPARC_ELF_DATA);
741 static void
742 sparc_put_word_32 (bfd *abfd, bfd_vma val, void *ptr)
744 bfd_put_32 (abfd, val, ptr);
747 static void
748 sparc_put_word_64 (bfd *abfd, bfd_vma val, void *ptr)
750 bfd_put_64 (abfd, val, ptr);
753 static void
754 sparc_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
756 const struct elf_backend_data *bed;
757 bfd_byte *loc;
759 bed = get_elf_backend_data (abfd);
760 BFD_ASSERT (s->reloc_count * bed->s->sizeof_rela < s->size);
761 loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
762 bed->s->swap_reloca_out (abfd, rel, loc);
765 static bfd_vma
766 sparc_elf_r_info_64 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
767 bfd_vma rel_index ATTRIBUTE_UNUSED,
768 bfd_vma type ATTRIBUTE_UNUSED)
770 return ELF64_R_INFO (rel_index,
771 (in_rel ?
772 ELF64_R_TYPE_INFO (ELF64_R_TYPE_DATA (in_rel->r_info),
773 type) : type));
776 static bfd_vma
777 sparc_elf_r_info_32 (Elf_Internal_Rela *in_rel ATTRIBUTE_UNUSED,
778 bfd_vma rel_index, bfd_vma type)
780 return ELF32_R_INFO (rel_index, type);
783 static bfd_vma
784 sparc_elf_r_symndx_64 (bfd_vma r_info)
786 bfd_vma r_symndx = ELF32_R_SYM (r_info);
787 return (r_symndx >> 24);
790 static bfd_vma
791 sparc_elf_r_symndx_32 (bfd_vma r_info)
793 return ELF32_R_SYM (r_info);
796 /* PLT/GOT stuff */
798 #define PLT32_ENTRY_SIZE 12
799 #define PLT32_HEADER_SIZE (4 * PLT32_ENTRY_SIZE)
801 /* The first four entries in a 32-bit procedure linkage table are reserved,
802 and the initial contents are unimportant (we zero them out).
803 Subsequent entries look like this. See the SVR4 ABI SPARC
804 supplement to see how this works. */
806 /* sethi %hi(.-.plt0),%g1. We fill in the address later. */
807 #define PLT32_ENTRY_WORD0 0x03000000
808 /* b,a .plt0. We fill in the offset later. */
809 #define PLT32_ENTRY_WORD1 0x30800000
810 /* nop. */
811 #define PLT32_ENTRY_WORD2 SPARC_NOP
813 static int
814 sparc32_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
815 bfd_vma max ATTRIBUTE_UNUSED,
816 bfd_vma *r_offset)
818 bfd_put_32 (output_bfd,
819 PLT32_ENTRY_WORD0 + offset,
820 splt->contents + offset);
821 bfd_put_32 (output_bfd,
822 (PLT32_ENTRY_WORD1
823 + (((- (offset + 4)) >> 2) & 0x3fffff)),
824 splt->contents + offset + 4);
825 bfd_put_32 (output_bfd, (bfd_vma) PLT32_ENTRY_WORD2,
826 splt->contents + offset + 8);
828 *r_offset = offset;
830 return offset / PLT32_ENTRY_SIZE - 4;
833 /* Both the headers and the entries are icache aligned. */
834 #define PLT64_ENTRY_SIZE 32
835 #define PLT64_HEADER_SIZE (4 * PLT64_ENTRY_SIZE)
836 #define PLT64_LARGE_THRESHOLD 32768
838 static int
839 sparc64_plt_entry_build (bfd *output_bfd, asection *splt, bfd_vma offset,
840 bfd_vma max, bfd_vma *r_offset)
842 unsigned char *entry = splt->contents + offset;
843 const unsigned int nop = SPARC_NOP;
844 int plt_index;
846 if (offset < (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
848 unsigned int sethi, ba;
850 *r_offset = offset;
852 plt_index = (offset / PLT64_ENTRY_SIZE);
854 sethi = 0x03000000 | (plt_index * PLT64_ENTRY_SIZE);
855 ba = 0x30680000
856 | (((splt->contents + PLT64_ENTRY_SIZE) - (entry + 4)) / 4 & 0x7ffff);
858 bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
859 bfd_put_32 (output_bfd, (bfd_vma) ba, entry + 4);
860 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 8);
861 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 12);
862 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 16);
863 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 20);
864 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 24);
865 bfd_put_32 (output_bfd, (bfd_vma) nop, entry + 28);
867 else
869 unsigned char *ptr;
870 unsigned int ldx;
871 int block, last_block, ofs, last_ofs, chunks_this_block;
872 const int insn_chunk_size = (6 * 4);
873 const int ptr_chunk_size = (1 * 8);
874 const int entries_per_block = 160;
875 const int block_size = entries_per_block * (insn_chunk_size
876 + ptr_chunk_size);
878 /* Entries 32768 and higher are grouped into blocks of 160.
879 The blocks are further subdivided into 160 sequences of
880 6 instructions and 160 pointers. If a block does not require
881 the full 160 entries, let's say it requires N, then there
882 will be N sequences of 6 instructions and N pointers. */
884 offset -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
885 max -= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE);
887 block = offset / block_size;
888 last_block = max / block_size;
889 if (block != last_block)
891 chunks_this_block = 160;
893 else
895 last_ofs = max % block_size;
896 chunks_this_block = last_ofs / (insn_chunk_size + ptr_chunk_size);
899 ofs = offset % block_size;
901 plt_index = (PLT64_LARGE_THRESHOLD +
902 (block * 160) +
903 (ofs / insn_chunk_size));
905 ptr = splt->contents
906 + (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
907 + (block * block_size)
908 + (chunks_this_block * insn_chunk_size)
909 + (ofs / insn_chunk_size) * ptr_chunk_size;
911 *r_offset = (bfd_vma) (ptr - splt->contents);
913 ldx = 0xc25be000 | ((ptr - (entry+4)) & 0x1fff);
915 /* mov %o7,%g5
916 call .+8
918 ldx [%o7+P],%g1
919 jmpl %o7+%g1,%g1
920 mov %g5,%o7 */
921 bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
922 bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
923 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP, entry + 8);
924 bfd_put_32 (output_bfd, (bfd_vma) ldx, entry + 12);
925 bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
926 bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
928 bfd_put_64 (output_bfd, (bfd_vma) (splt->contents - (entry + 4)), ptr);
931 return plt_index - 4;
934 /* The format of the first PLT entry in a VxWorks executable. */
935 static const bfd_vma sparc_vxworks_exec_plt0_entry[] =
937 0x05000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+8), %g2 */
938 0x8410a000, /* or %g2, %lo(_GLOBAL_OFFSET_TABLE_+8), %g2 */
939 0xc4008000, /* ld [ %g2 ], %g2 */
940 0x81c08000, /* jmp %g2 */
941 0x01000000 /* nop */
944 /* The format of subsequent PLT entries. */
945 static const bfd_vma sparc_vxworks_exec_plt_entry[] =
947 0x03000000, /* sethi %hi(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
948 0x82106000, /* or %g1, %lo(_GLOBAL_OFFSET_TABLE_+f@got), %g1 */
949 0xc2004000, /* ld [ %g1 ], %g1 */
950 0x81c04000, /* jmp %g1 */
951 0x01000000, /* nop */
952 0x03000000, /* sethi %hi(f@pltindex), %g1 */
953 0x10800000, /* b _PLT_resolve */
954 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
957 /* The format of the first PLT entry in a VxWorks shared object. */
958 static const bfd_vma sparc_vxworks_shared_plt0_entry[] =
960 0xc405e008, /* ld [ %l7 + 8 ], %g2 */
961 0x81c08000, /* jmp %g2 */
962 0x01000000 /* nop */
965 /* The format of subsequent PLT entries. */
966 static const bfd_vma sparc_vxworks_shared_plt_entry[] =
968 0x03000000, /* sethi %hi(f@got), %g1 */
969 0x82106000, /* or %g1, %lo(f@got), %g1 */
970 0xc205c001, /* ld [ %l7 + %g1 ], %g1 */
971 0x81c04000, /* jmp %g1 */
972 0x01000000, /* nop */
973 0x03000000, /* sethi %hi(f@pltindex), %g1 */
974 0x10800000, /* b _PLT_resolve */
975 0x82106000 /* or %g1, %lo(f@pltindex), %g1 */
978 #define SPARC_ELF_PUT_WORD(htab, bfd, val, ptr) \
979 htab->put_word(bfd, val, ptr)
981 #define SPARC_ELF_R_INFO(htab, in_rel, index, type) \
982 htab->r_info(in_rel, index, type)
984 #define SPARC_ELF_R_SYMNDX(htab, r_info) \
985 htab->r_symndx(r_info)
987 #define SPARC_ELF_WORD_BYTES(htab) \
988 htab->bytes_per_word
990 #define SPARC_ELF_RELA_BYTES(htab) \
991 htab->bytes_per_rela
993 #define SPARC_ELF_DTPOFF_RELOC(htab) \
994 htab->dtpoff_reloc
996 #define SPARC_ELF_DTPMOD_RELOC(htab) \
997 htab->dtpmod_reloc
999 #define SPARC_ELF_TPOFF_RELOC(htab) \
1000 htab->tpoff_reloc
1002 #define SPARC_ELF_BUILD_PLT_ENTRY(htab, obfd, splt, off, max, r_off) \
1003 htab->build_plt_entry (obfd, splt, off, max, r_off)
1005 /* Create an entry in an SPARC ELF linker hash table. */
1007 static struct bfd_hash_entry *
1008 link_hash_newfunc (struct bfd_hash_entry *entry,
1009 struct bfd_hash_table *table, const char *string)
1011 /* Allocate the structure if it has not already been allocated by a
1012 subclass. */
1013 if (entry == NULL)
1015 entry = bfd_hash_allocate (table,
1016 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1017 if (entry == NULL)
1018 return entry;
1021 /* Call the allocation method of the superclass. */
1022 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
1023 if (entry != NULL)
1025 struct _bfd_sparc_elf_link_hash_entry *eh;
1027 eh = (struct _bfd_sparc_elf_link_hash_entry *) entry;
1028 eh->tls_type = GOT_UNKNOWN;
1029 eh->has_got_reloc = 0;
1030 eh->has_non_got_reloc = 0;
1033 return entry;
1036 /* The name of the dynamic interpreter. This is put in the .interp
1037 section. */
1039 #define ELF32_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1040 #define ELF64_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
1042 /* Compute a hash of a local hash entry. We use elf_link_hash_entry
1043 for local symbol so that we can handle local STT_GNU_IFUNC symbols
1044 as global symbol. We reuse indx and dynstr_index for local symbol
1045 hash since they aren't used by global symbols in this backend. */
1047 static hashval_t
1048 elf_sparc_local_htab_hash (const void *ptr)
1050 struct elf_link_hash_entry *h
1051 = (struct elf_link_hash_entry *) ptr;
1052 return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
1055 /* Compare local hash entries. */
1057 static int
1058 elf_sparc_local_htab_eq (const void *ptr1, const void *ptr2)
1060 struct elf_link_hash_entry *h1
1061 = (struct elf_link_hash_entry *) ptr1;
1062 struct elf_link_hash_entry *h2
1063 = (struct elf_link_hash_entry *) ptr2;
1065 return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
1068 /* Find and/or create a hash entry for local symbol. */
1070 static struct elf_link_hash_entry *
1071 elf_sparc_get_local_sym_hash (struct _bfd_sparc_elf_link_hash_table *htab,
1072 bfd *abfd, const Elf_Internal_Rela *rel,
1073 bool create)
1075 struct _bfd_sparc_elf_link_hash_entry e, *ret;
1076 asection *sec = abfd->sections;
1077 unsigned long r_symndx;
1078 hashval_t h;
1079 void **slot;
1081 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1082 h = ELF_LOCAL_SYMBOL_HASH (sec->id, r_symndx);
1084 e.elf.indx = sec->id;
1085 e.elf.dynstr_index = r_symndx;
1086 slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
1087 create ? INSERT : NO_INSERT);
1089 if (!slot)
1090 return NULL;
1092 if (*slot)
1094 ret = (struct _bfd_sparc_elf_link_hash_entry *) *slot;
1095 return &ret->elf;
1098 ret = (struct _bfd_sparc_elf_link_hash_entry *)
1099 objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
1100 sizeof (struct _bfd_sparc_elf_link_hash_entry));
1101 if (ret)
1103 memset (ret, 0, sizeof (*ret));
1104 ret->elf.indx = sec->id;
1105 ret->elf.dynstr_index = r_symndx;
1106 ret->elf.dynindx = -1;
1107 ret->elf.plt.offset = (bfd_vma) -1;
1108 ret->elf.got.offset = (bfd_vma) -1;
1109 *slot = ret;
1111 return &ret->elf;
1114 /* Destroy a SPARC ELF linker hash table. */
1116 static void
1117 _bfd_sparc_elf_link_hash_table_free (bfd *obfd)
1119 struct _bfd_sparc_elf_link_hash_table *htab
1120 = (struct _bfd_sparc_elf_link_hash_table *) obfd->link.hash;
1122 if (htab->loc_hash_table)
1123 htab_delete (htab->loc_hash_table);
1124 if (htab->loc_hash_memory)
1125 objalloc_free ((struct objalloc *) htab->loc_hash_memory);
1126 _bfd_elf_link_hash_table_free (obfd);
1129 /* Create a SPARC ELF linker hash table. */
1131 struct bfd_link_hash_table *
1132 _bfd_sparc_elf_link_hash_table_create (bfd *abfd)
1134 struct _bfd_sparc_elf_link_hash_table *ret;
1135 size_t amt = sizeof (struct _bfd_sparc_elf_link_hash_table);
1137 ret = (struct _bfd_sparc_elf_link_hash_table *) bfd_zmalloc (amt);
1138 if (ret == NULL)
1139 return NULL;
1141 if (ABI_64_P (abfd))
1143 ret->put_word = sparc_put_word_64;
1144 ret->r_info = sparc_elf_r_info_64;
1145 ret->r_symndx = sparc_elf_r_symndx_64;
1146 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF64;
1147 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD64;
1148 ret->tpoff_reloc = R_SPARC_TLS_TPOFF64;
1149 ret->word_align_power = 3;
1150 ret->align_power_max = 4;
1151 ret->bytes_per_word = 8;
1152 ret->bytes_per_rela = sizeof (Elf64_External_Rela);
1153 ret->dynamic_interpreter = ELF64_DYNAMIC_INTERPRETER;
1154 ret->dynamic_interpreter_size = sizeof ELF64_DYNAMIC_INTERPRETER;
1156 ret->build_plt_entry = sparc64_plt_entry_build;
1157 ret->plt_header_size = PLT64_HEADER_SIZE;
1158 ret->plt_entry_size = PLT64_ENTRY_SIZE;
1160 else
1162 ret->put_word = sparc_put_word_32;
1163 ret->r_info = sparc_elf_r_info_32;
1164 ret->r_symndx = sparc_elf_r_symndx_32;
1165 ret->dtpoff_reloc = R_SPARC_TLS_DTPOFF32;
1166 ret->dtpmod_reloc = R_SPARC_TLS_DTPMOD32;
1167 ret->tpoff_reloc = R_SPARC_TLS_TPOFF32;
1168 ret->word_align_power = 2;
1169 ret->align_power_max = 3;
1170 ret->bytes_per_word = 4;
1171 ret->bytes_per_rela = sizeof (Elf32_External_Rela);
1172 ret->dynamic_interpreter = ELF32_DYNAMIC_INTERPRETER;
1173 ret->dynamic_interpreter_size = sizeof ELF32_DYNAMIC_INTERPRETER;
1175 ret->build_plt_entry = sparc32_plt_entry_build;
1176 ret->plt_header_size = PLT32_HEADER_SIZE;
1177 ret->plt_entry_size = PLT32_ENTRY_SIZE;
1180 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
1181 sizeof (struct _bfd_sparc_elf_link_hash_entry),
1182 SPARC_ELF_DATA))
1184 free (ret);
1185 return NULL;
1188 ret->loc_hash_table = htab_try_create (1024,
1189 elf_sparc_local_htab_hash,
1190 elf_sparc_local_htab_eq,
1191 NULL);
1192 ret->loc_hash_memory = objalloc_create ();
1193 if (!ret->loc_hash_table || !ret->loc_hash_memory)
1195 _bfd_sparc_elf_link_hash_table_free (abfd);
1196 return NULL;
1198 ret->elf.root.hash_table_free = _bfd_sparc_elf_link_hash_table_free;
1200 return &ret->elf.root;
1203 /* Create .plt, .rela.plt, .got, .rela.got, .dynbss, and
1204 .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
1205 hash table. */
1207 bool
1208 _bfd_sparc_elf_create_dynamic_sections (bfd *dynobj,
1209 struct bfd_link_info *info)
1211 struct _bfd_sparc_elf_link_hash_table *htab;
1213 htab = _bfd_sparc_elf_hash_table (info);
1214 BFD_ASSERT (htab != NULL);
1216 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1217 return false;
1219 if (htab->elf.target_os == is_vxworks)
1221 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
1222 return false;
1223 if (bfd_link_pic (info))
1225 htab->plt_header_size
1226 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt0_entry);
1227 htab->plt_entry_size
1228 = 4 * ARRAY_SIZE (sparc_vxworks_shared_plt_entry);
1230 else
1232 htab->plt_header_size
1233 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt0_entry);
1234 htab->plt_entry_size
1235 = 4 * ARRAY_SIZE (sparc_vxworks_exec_plt_entry);
1239 if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss
1240 || (!bfd_link_pic (info) && !htab->elf.srelbss))
1241 abort ();
1243 return true;
1246 static bool
1247 create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
1249 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1250 struct elf_link_hash_table *htab = elf_hash_table (info);
1251 flagword flags, pltflags;
1252 asection *s;
1254 if (htab->irelifunc != NULL || htab->iplt != NULL)
1255 return true;
1257 flags = bed->dynamic_sec_flags;
1258 pltflags = flags | SEC_ALLOC | SEC_CODE | SEC_LOAD;
1260 s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
1261 if (s == NULL
1262 || !bfd_set_section_alignment (s, bed->plt_alignment))
1263 return false;
1264 htab->iplt = s;
1266 s = bfd_make_section_with_flags (abfd, ".rela.iplt",
1267 flags | SEC_READONLY);
1268 if (s == NULL
1269 || !bfd_set_section_alignment (s, bed->s->log_file_align))
1270 return false;
1271 htab->irelplt = s;
1273 return true;
1276 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1278 void
1279 _bfd_sparc_elf_copy_indirect_symbol (struct bfd_link_info *info,
1280 struct elf_link_hash_entry *dir,
1281 struct elf_link_hash_entry *ind)
1283 struct _bfd_sparc_elf_link_hash_entry *edir, *eind;
1285 edir = (struct _bfd_sparc_elf_link_hash_entry *) dir;
1286 eind = (struct _bfd_sparc_elf_link_hash_entry *) ind;
1288 if (ind->root.type == bfd_link_hash_indirect && dir->got.refcount <= 0)
1290 edir->tls_type = eind->tls_type;
1291 eind->tls_type = GOT_UNKNOWN;
1294 /* Copy has_got_reloc and has_non_got_reloc. */
1295 edir->has_got_reloc |= eind->has_got_reloc;
1296 edir->has_non_got_reloc |= eind->has_non_got_reloc;
1298 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1301 static int
1302 sparc_elf_tls_transition (struct bfd_link_info *info, bfd *abfd,
1303 int r_type, int is_local)
1305 if (! ABI_64_P (abfd)
1306 && r_type == R_SPARC_TLS_GD_HI22
1307 && ! _bfd_sparc_elf_tdata (abfd)->has_tlsgd)
1308 return R_SPARC_REV32;
1310 if (!bfd_link_executable (info))
1311 return r_type;
1313 switch (r_type)
1315 case R_SPARC_TLS_GD_HI22:
1316 return is_local ? R_SPARC_TLS_LE_HIX22 : R_SPARC_TLS_IE_HI22;
1317 case R_SPARC_TLS_GD_LO10:
1318 return is_local ? R_SPARC_TLS_LE_LOX10 : R_SPARC_TLS_IE_LO10;
1319 case R_SPARC_TLS_LDM_HI22:
1320 return R_SPARC_TLS_LE_HIX22;
1321 case R_SPARC_TLS_LDM_LO10:
1322 return R_SPARC_TLS_LE_LOX10;
1323 case R_SPARC_TLS_IE_HI22:
1324 return is_local ? R_SPARC_TLS_LE_HIX22 : r_type;
1325 case R_SPARC_TLS_IE_LO10:
1326 return is_local ? R_SPARC_TLS_LE_LOX10 : r_type;
1329 return r_type;
1332 /* Look through the relocs for a section during the first phase, and
1333 allocate space in the global offset table or procedure linkage
1334 table. */
1336 bool
1337 _bfd_sparc_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
1338 asection *sec, const Elf_Internal_Rela *relocs)
1340 struct _bfd_sparc_elf_link_hash_table *htab;
1341 Elf_Internal_Shdr *symtab_hdr;
1342 struct elf_link_hash_entry **sym_hashes;
1343 const Elf_Internal_Rela *rel;
1344 const Elf_Internal_Rela *rel_end;
1345 asection *sreloc;
1346 int num_relocs;
1347 bool checked_tlsgd = false;
1349 if (bfd_link_relocatable (info))
1350 return true;
1352 htab = _bfd_sparc_elf_hash_table (info);
1353 BFD_ASSERT (htab != NULL);
1354 symtab_hdr = &elf_symtab_hdr (abfd);
1355 sym_hashes = elf_sym_hashes (abfd);
1357 sreloc = NULL;
1359 if (ABI_64_P (abfd))
1360 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (sec));
1361 else
1362 num_relocs = sec->reloc_count;
1364 BFD_ASSERT (is_sparc_elf (abfd) || num_relocs == 0);
1366 if (htab->elf.dynobj == NULL)
1367 htab->elf.dynobj = abfd;
1368 if (!create_ifunc_sections (htab->elf.dynobj, info))
1369 return false;
1371 rel_end = relocs + num_relocs;
1372 for (rel = relocs; rel < rel_end; rel++)
1374 unsigned int r_type;
1375 unsigned int r_symndx;
1376 struct elf_link_hash_entry *h;
1377 struct _bfd_sparc_elf_link_hash_entry *eh;
1378 Elf_Internal_Sym *isym;
1380 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
1381 r_type = SPARC_ELF_R_TYPE (rel->r_info);
1383 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1385 /* xgettext:c-format */
1386 _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx);
1387 return false;
1390 isym = NULL;
1391 if (r_symndx < symtab_hdr->sh_info)
1393 /* A local symbol. */
1394 isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, abfd,
1395 r_symndx);
1396 if (isym == NULL)
1397 return false;
1399 /* Check relocation against local STT_GNU_IFUNC symbol. */
1400 if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1402 h = elf_sparc_get_local_sym_hash (htab, abfd, rel, true);
1403 if (h == NULL)
1404 return false;
1406 /* Fake a STT_GNU_IFUNC symbol. */
1407 h->type = STT_GNU_IFUNC;
1408 h->def_regular = 1;
1409 h->ref_regular = 1;
1410 h->forced_local = 1;
1411 h->root.type = bfd_link_hash_defined;
1413 else
1414 h = NULL;
1416 else
1418 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1419 while (h->root.type == bfd_link_hash_indirect
1420 || h->root.type == bfd_link_hash_warning)
1421 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1424 if (h && h->type == STT_GNU_IFUNC && h->def_regular)
1426 h->ref_regular = 1;
1427 h->plt.refcount += 1;
1430 /* Compatibility with old R_SPARC_REV32 reloc conflicting
1431 with R_SPARC_TLS_GD_HI22. */
1432 if (! ABI_64_P (abfd) && ! checked_tlsgd)
1433 switch (r_type)
1435 case R_SPARC_TLS_GD_HI22:
1437 const Elf_Internal_Rela *relt;
1439 for (relt = rel + 1; relt < rel_end; relt++)
1440 if (ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_LO10
1441 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_ADD
1442 || ELF32_R_TYPE (relt->r_info) == R_SPARC_TLS_GD_CALL)
1443 break;
1444 checked_tlsgd = true;
1445 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = relt < rel_end;
1447 break;
1448 case R_SPARC_TLS_GD_LO10:
1449 case R_SPARC_TLS_GD_ADD:
1450 case R_SPARC_TLS_GD_CALL:
1451 checked_tlsgd = true;
1452 _bfd_sparc_elf_tdata (abfd)->has_tlsgd = true;
1453 break;
1456 r_type = sparc_elf_tls_transition (info, abfd, r_type, h == NULL);
1457 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1459 switch (r_type)
1461 case R_SPARC_TLS_LDM_HI22:
1462 case R_SPARC_TLS_LDM_LO10:
1463 htab->tls_ldm_got.refcount += 1;
1464 if (eh != NULL)
1465 eh->has_got_reloc = 1;
1466 break;
1468 case R_SPARC_TLS_LE_HIX22:
1469 case R_SPARC_TLS_LE_LOX10:
1470 if (!bfd_link_executable (info))
1471 goto r_sparc_plt32;
1472 break;
1474 case R_SPARC_TLS_IE_HI22:
1475 case R_SPARC_TLS_IE_LO10:
1476 if (!bfd_link_executable (info))
1477 info->flags |= DF_STATIC_TLS;
1478 /* Fall through */
1480 case R_SPARC_GOT10:
1481 case R_SPARC_GOT13:
1482 case R_SPARC_GOT22:
1483 case R_SPARC_GOTDATA_HIX22:
1484 case R_SPARC_GOTDATA_LOX10:
1485 case R_SPARC_GOTDATA_OP_HIX22:
1486 case R_SPARC_GOTDATA_OP_LOX10:
1487 case R_SPARC_TLS_GD_HI22:
1488 case R_SPARC_TLS_GD_LO10:
1489 /* This symbol requires a global offset table entry. */
1491 int tls_type, old_tls_type;
1493 switch (r_type)
1495 case R_SPARC_TLS_GD_HI22:
1496 case R_SPARC_TLS_GD_LO10:
1497 tls_type = GOT_TLS_GD;
1498 break;
1499 case R_SPARC_TLS_IE_HI22:
1500 case R_SPARC_TLS_IE_LO10:
1501 tls_type = GOT_TLS_IE;
1502 break;
1503 default:
1504 tls_type = GOT_NORMAL;
1505 break;
1508 if (h != NULL)
1510 h->got.refcount += 1;
1511 old_tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
1513 else
1515 bfd_signed_vma *local_got_refcounts;
1517 /* This is a global offset table entry for a local symbol. */
1518 local_got_refcounts = elf_local_got_refcounts (abfd);
1519 if (local_got_refcounts == NULL)
1521 bfd_size_type size;
1523 size = symtab_hdr->sh_info;
1524 size *= (sizeof (bfd_signed_vma) + sizeof(char));
1525 local_got_refcounts = ((bfd_signed_vma *)
1526 bfd_zalloc (abfd, size));
1527 if (local_got_refcounts == NULL)
1528 return false;
1529 elf_local_got_refcounts (abfd) = local_got_refcounts;
1530 _bfd_sparc_elf_local_got_tls_type (abfd)
1531 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
1534 if (r_type != R_SPARC_GOTDATA_OP_HIX22
1535 && r_type != R_SPARC_GOTDATA_OP_LOX10)
1536 local_got_refcounts[r_symndx] += 1;
1538 old_tls_type
1539 = _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx];
1542 /* If a TLS symbol is accessed using IE at least once, there is no
1543 point in using the dynamic model for it. */
1544 if (old_tls_type != tls_type)
1546 if (old_tls_type == GOT_UNKNOWN)
1548 else if (old_tls_type == GOT_TLS_GD && tls_type == GOT_TLS_IE)
1550 else if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
1551 tls_type = old_tls_type;
1552 else
1554 _bfd_error_handler
1555 /* xgettext:c-format */
1556 (_("%pB: `%s' accessed both as normal and thread local symbol"),
1557 abfd, h ? h->root.root.string : "<local>");
1558 return false;
1561 if (h != NULL)
1562 _bfd_sparc_elf_hash_entry (h)->tls_type = tls_type;
1563 else
1564 _bfd_sparc_elf_local_got_tls_type (abfd) [r_symndx] = tls_type;
1568 if (!htab->elf.sgot
1569 && !_bfd_elf_create_got_section (htab->elf.dynobj, info))
1570 return false;
1572 if (eh != NULL)
1574 eh->has_got_reloc = 1;
1575 if (r_type == R_SPARC_GOT10
1576 || r_type == R_SPARC_GOT13
1577 || r_type == R_SPARC_GOT22)
1578 eh->has_old_style_got_reloc = 1;
1580 break;
1582 case R_SPARC_TLS_GD_CALL:
1583 case R_SPARC_TLS_LDM_CALL:
1584 if (bfd_link_executable (info))
1585 break;
1587 /* Essentially R_SPARC_WPLT30 relocs against __tls_get_addr. */
1588 h = (struct elf_link_hash_entry *)
1589 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
1590 false, true);
1591 BFD_ASSERT (h != NULL);
1592 /* Fall through */
1594 case R_SPARC_WPLT30:
1595 case R_SPARC_PLT32:
1596 case R_SPARC_PLT64:
1597 case R_SPARC_HIPLT22:
1598 case R_SPARC_LOPLT10:
1599 case R_SPARC_PCPLT32:
1600 case R_SPARC_PCPLT22:
1601 case R_SPARC_PCPLT10:
1602 /* This symbol requires a procedure linkage table entry.
1603 We actually build the entry in adjust_dynamic_symbol,
1604 because this might be a case of linking PIC code without
1605 linking in any dynamic objects, in which case we don't
1606 need to generate a procedure linkage table after all. */
1608 if (h == NULL)
1610 if (! ABI_64_P (abfd))
1612 /* The Solaris native assembler will generate a WPLT30
1613 reloc for a local symbol if you assemble a call from
1614 one section to another when using -K pic. We treat
1615 it as WDISP30. */
1616 if (r_type == R_SPARC_PLT32)
1617 goto r_sparc_plt32;
1618 break;
1620 /* PR 7027: We need similar behaviour for 64-bit binaries. */
1621 else if (r_type == R_SPARC_WPLT30)
1622 break;
1624 /* It does not make sense to have a procedure linkage
1625 table entry for a local symbol. */
1626 bfd_set_error (bfd_error_bad_value);
1627 return false;
1630 h->needs_plt = 1;
1632 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
1633 goto r_sparc_plt32;
1635 h->plt.refcount += 1;
1637 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
1638 eh->has_got_reloc = 1;
1639 break;
1641 case R_SPARC_PC10:
1642 case R_SPARC_PC22:
1643 case R_SPARC_PC_HH22:
1644 case R_SPARC_PC_HM10:
1645 case R_SPARC_PC_LM22:
1646 if (h != NULL)
1647 h->non_got_ref = 1;
1649 if (h != NULL
1650 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1651 break;
1652 /* Fall through. */
1654 case R_SPARC_DISP8:
1655 case R_SPARC_DISP16:
1656 case R_SPARC_DISP32:
1657 case R_SPARC_DISP64:
1658 case R_SPARC_WDISP30:
1659 case R_SPARC_WDISP22:
1660 case R_SPARC_WDISP19:
1661 case R_SPARC_WDISP16:
1662 case R_SPARC_WDISP10:
1663 case R_SPARC_8:
1664 case R_SPARC_16:
1665 case R_SPARC_32:
1666 case R_SPARC_HI22:
1667 case R_SPARC_22:
1668 case R_SPARC_13:
1669 case R_SPARC_LO10:
1670 case R_SPARC_UA16:
1671 case R_SPARC_UA32:
1672 case R_SPARC_10:
1673 case R_SPARC_11:
1674 case R_SPARC_64:
1675 case R_SPARC_OLO10:
1676 case R_SPARC_HH22:
1677 case R_SPARC_HM10:
1678 case R_SPARC_LM22:
1679 case R_SPARC_7:
1680 case R_SPARC_5:
1681 case R_SPARC_6:
1682 case R_SPARC_HIX22:
1683 case R_SPARC_LOX10:
1684 case R_SPARC_H44:
1685 case R_SPARC_M44:
1686 case R_SPARC_L44:
1687 case R_SPARC_H34:
1688 case R_SPARC_UA64:
1689 if (h != NULL)
1690 h->non_got_ref = 1;
1692 if (eh != NULL && (sec->flags & SEC_CODE) != 0)
1693 eh->has_non_got_reloc = 1;
1695 r_sparc_plt32:
1696 if (h != NULL && !bfd_link_pic (info))
1698 /* We may need a .plt entry if the function this reloc
1699 refers to is in a shared lib. */
1700 h->plt.refcount += 1;
1703 /* If we are creating a shared library, and this is a reloc
1704 against a global symbol, or a non PC relative reloc
1705 against a local symbol, then we need to copy the reloc
1706 into the shared library. However, if we are linking with
1707 -Bsymbolic, we do not need to copy a reloc against a
1708 global symbol which is defined in an object we are
1709 including in the link (i.e., DEF_REGULAR is set). At
1710 this point we have not seen all the input files, so it is
1711 possible that DEF_REGULAR is not set now but will be set
1712 later (it is never cleared). In case of a weak definition,
1713 DEF_REGULAR may be cleared later by a strong definition in
1714 a shared library. We account for that possibility below by
1715 storing information in the relocs_copied field of the hash
1716 table entry. A similar situation occurs when creating
1717 shared libraries and symbol visibility changes render the
1718 symbol local.
1720 If on the other hand, we are creating an executable, we
1721 may need to keep relocations for symbols satisfied by a
1722 dynamic library if we manage to avoid copy relocs for the
1723 symbol. */
1724 if ((bfd_link_pic (info)
1725 && (sec->flags & SEC_ALLOC) != 0
1726 && (! _bfd_sparc_elf_howto_table[r_type].pc_relative
1727 || (h != NULL
1728 && (! SYMBOLIC_BIND (info, h)
1729 || h->root.type == bfd_link_hash_defweak
1730 || !h->def_regular))))
1731 || (!bfd_link_pic (info)
1732 && (sec->flags & SEC_ALLOC) != 0
1733 && h != NULL
1734 && (h->root.type == bfd_link_hash_defweak
1735 || !h->def_regular))
1736 || (!bfd_link_pic (info)
1737 && h != NULL
1738 && h->type == STT_GNU_IFUNC))
1740 struct elf_dyn_relocs *p;
1741 struct elf_dyn_relocs **head;
1743 /* When creating a shared object, we must copy these
1744 relocs into the output file. We create a reloc
1745 section in dynobj and make room for the reloc. */
1746 if (sreloc == NULL)
1748 sreloc = _bfd_elf_make_dynamic_reloc_section
1749 (sec, htab->elf.dynobj, htab->word_align_power,
1750 abfd, /*rela?*/ true);
1752 if (sreloc == NULL)
1753 return false;
1756 /* If this is a global symbol, we count the number of
1757 relocations we need for this symbol. */
1758 if (h != NULL)
1759 head = &h->dyn_relocs;
1760 else
1762 /* Track dynamic relocs needed for local syms too.
1763 We really need local syms available to do this
1764 easily. Oh well. */
1765 asection *s;
1766 void *vpp;
1768 BFD_ASSERT (isym != NULL);
1769 s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1770 if (s == NULL)
1771 s = sec;
1773 vpp = &elf_section_data (s)->local_dynrel;
1774 head = (struct elf_dyn_relocs **) vpp;
1777 p = *head;
1778 if (p == NULL || p->sec != sec)
1780 size_t amt = sizeof *p;
1781 p = ((struct elf_dyn_relocs *)
1782 bfd_alloc (htab->elf.dynobj, amt));
1783 if (p == NULL)
1784 return false;
1785 p->next = *head;
1786 *head = p;
1787 p->sec = sec;
1788 p->count = 0;
1789 p->pc_count = 0;
1792 p->count += 1;
1793 if (_bfd_sparc_elf_howto_table[r_type].pc_relative)
1794 p->pc_count += 1;
1797 break;
1799 case R_SPARC_GNU_VTINHERIT:
1800 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1801 return false;
1802 break;
1804 case R_SPARC_GNU_VTENTRY:
1805 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1806 return false;
1807 break;
1809 case R_SPARC_REGISTER:
1810 /* Nothing to do. */
1811 break;
1813 default:
1814 break;
1818 return true;
1821 asection *
1822 _bfd_sparc_elf_gc_mark_hook (asection *sec,
1823 struct bfd_link_info *info,
1824 Elf_Internal_Rela *rel,
1825 struct elf_link_hash_entry *h,
1826 Elf_Internal_Sym *sym)
1828 if (h != NULL)
1829 switch (SPARC_ELF_R_TYPE (rel->r_info))
1831 case R_SPARC_GNU_VTINHERIT:
1832 case R_SPARC_GNU_VTENTRY:
1833 return NULL;
1836 if (!bfd_link_executable (info))
1838 switch (SPARC_ELF_R_TYPE (rel->r_info))
1840 case R_SPARC_TLS_GD_CALL:
1841 case R_SPARC_TLS_LDM_CALL:
1842 /* This reloc implicitly references __tls_get_addr. We know
1843 another reloc will reference the same symbol as the one
1844 on this reloc, so the real symbol and section will be
1845 gc marked when processing the other reloc. That lets
1846 us handle __tls_get_addr here. */
1847 h = elf_link_hash_lookup (elf_hash_table (info), "__tls_get_addr",
1848 false, false, true);
1849 BFD_ASSERT (h != NULL);
1850 h->mark = 1;
1851 if (h->is_weakalias)
1852 weakdef (h)->mark = 1;
1853 sym = NULL;
1857 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1860 static Elf_Internal_Rela *
1861 sparc_elf_find_reloc_at_ofs (Elf_Internal_Rela *rel,
1862 Elf_Internal_Rela *relend,
1863 bfd_vma offset)
1865 while (rel < relend)
1867 if (rel->r_offset == offset)
1868 return rel;
1869 rel++;
1871 return NULL;
1874 /* Remove undefined weak symbol from the dynamic symbol table if it
1875 is resolved to 0. */
1877 bool
1878 _bfd_sparc_elf_fixup_symbol (struct bfd_link_info *info,
1879 struct elf_link_hash_entry *h)
1881 if (h->dynindx != -1
1882 && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
1883 _bfd_sparc_elf_hash_entry (h)))
1885 h->dynindx = -1;
1886 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1887 h->dynstr_index);
1889 return true;
1892 /* Adjust a symbol defined by a dynamic object and referenced by a
1893 regular object. The current definition is in some section of the
1894 dynamic object, but we're not including those sections. We have to
1895 change the definition to something the rest of the link can
1896 understand. */
1898 bool
1899 _bfd_sparc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1900 struct elf_link_hash_entry *h)
1902 struct _bfd_sparc_elf_link_hash_table *htab;
1903 asection *s, *srel;
1905 htab = _bfd_sparc_elf_hash_table (info);
1906 BFD_ASSERT (htab != NULL);
1908 /* Make sure we know what is going on here. */
1909 BFD_ASSERT (htab->elf.dynobj != NULL
1910 && (h->needs_plt
1911 || h->type == STT_GNU_IFUNC
1912 || h->is_weakalias
1913 || (h->def_dynamic
1914 && h->ref_regular
1915 && !h->def_regular)));
1917 /* If this is a function, put it in the procedure linkage table. We
1918 will fill in the contents of the procedure linkage table later
1919 (although we could actually do it here). The STT_NOTYPE
1920 condition is a hack specifically for the Oracle libraries
1921 delivered for Solaris; for some inexplicable reason, they define
1922 some of their functions as STT_NOTYPE when they really should be
1923 STT_FUNC. */
1924 if (h->type == STT_FUNC
1925 || h->type == STT_GNU_IFUNC
1926 || h->needs_plt
1927 || (h->type == STT_NOTYPE
1928 && (h->root.type == bfd_link_hash_defined
1929 || h->root.type == bfd_link_hash_defweak)
1930 && (h->root.u.def.section->flags & SEC_CODE) != 0))
1932 if (h->plt.refcount <= 0
1933 || (h->type != STT_GNU_IFUNC
1934 && (SYMBOL_CALLS_LOCAL (info, h)
1935 || (h->root.type == bfd_link_hash_undefweak
1936 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))))
1938 /* This case can occur if we saw a WPLT30 reloc in an input
1939 file, but the symbol was never referred to by a dynamic
1940 object, or if all references were garbage collected. In
1941 such a case, we don't actually need to build a procedure
1942 linkage table, and we can just do a WDISP30 reloc instead. */
1943 h->plt.offset = (bfd_vma) -1;
1944 h->needs_plt = 0;
1947 return true;
1949 else
1950 h->plt.offset = (bfd_vma) -1;
1952 /* If this is a weak symbol, and there is a real definition, the
1953 processor independent code will have arranged for us to see the
1954 real definition first, and we can just use the same value. */
1955 if (h->is_weakalias)
1957 struct elf_link_hash_entry *def = weakdef (h);
1958 BFD_ASSERT (def->root.type == bfd_link_hash_defined);
1959 h->root.u.def.section = def->root.u.def.section;
1960 h->root.u.def.value = def->root.u.def.value;
1961 return true;
1964 /* This is a reference to a symbol defined by a dynamic object which
1965 is not a function. */
1967 /* If we are creating a shared library, we must presume that the
1968 only references to the symbol are via the global offset table.
1969 For such cases we need not do anything here; the relocations will
1970 be handled correctly by relocate_section. */
1971 if (bfd_link_pic (info))
1972 return true;
1974 /* If there are no references to this symbol that do not use the
1975 GOT, we don't need to generate a copy reloc. */
1976 if (!h->non_got_ref)
1977 return true;
1979 /* If -z nocopyreloc was given, we won't generate them either. */
1980 if (info->nocopyreloc)
1982 h->non_got_ref = 0;
1983 return true;
1986 /* If we don't find any dynamic relocs in read-only sections, then
1987 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1988 if (!_bfd_elf_readonly_dynrelocs (h))
1990 h->non_got_ref = 0;
1991 return true;
1994 /* We must allocate the symbol in our .dynbss section, which will
1995 become part of the .bss section of the executable. There will be
1996 an entry for this symbol in the .dynsym section. The dynamic
1997 object will contain position independent code, so all references
1998 from the dynamic object to this symbol will go through the global
1999 offset table. The dynamic linker will use the .dynsym entry to
2000 determine the address it must put in the global offset table, so
2001 both the dynamic object and the regular object will refer to the
2002 same memory location for the variable. */
2004 /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
2005 to copy the initial value out of the dynamic object and into the
2006 runtime process image. We need to remember the offset into the
2007 .rel.bss section we are going to use. */
2008 if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
2010 s = htab->elf.sdynrelro;
2011 srel = htab->elf.sreldynrelro;
2013 else
2015 s = htab->elf.sdynbss;
2016 srel = htab->elf.srelbss;
2018 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
2020 srel->size += SPARC_ELF_RELA_BYTES (htab);
2021 h->needs_copy = 1;
2024 return _bfd_elf_adjust_dynamic_copy (info, h, s);
2027 /* Allocate space in .plt, .got and associated reloc sections for
2028 dynamic relocs. */
2030 static bool
2031 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2033 struct bfd_link_info *info;
2034 struct _bfd_sparc_elf_link_hash_table *htab;
2035 struct _bfd_sparc_elf_link_hash_entry *eh;
2036 struct elf_dyn_relocs *p;
2037 bool resolved_to_zero;
2039 if (h->root.type == bfd_link_hash_indirect)
2040 return true;
2042 info = (struct bfd_link_info *) inf;
2043 htab = _bfd_sparc_elf_hash_table (info);
2044 BFD_ASSERT (htab != NULL);
2046 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
2047 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
2049 if ((htab->elf.dynamic_sections_created
2050 && h->plt.refcount > 0)
2051 || (h->type == STT_GNU_IFUNC
2052 && h->def_regular
2053 && h->ref_regular))
2055 /* Undefined weak syms won't yet be marked as dynamic. */
2056 if (h->root.type == bfd_link_hash_undefweak
2057 && !resolved_to_zero
2058 && h->dynindx == -1
2059 && !h->forced_local)
2061 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2062 return false;
2065 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)
2066 || (h->type == STT_GNU_IFUNC
2067 && h->def_regular))
2069 asection *s = htab->elf.splt;
2071 if (s == NULL)
2072 s = htab->elf.iplt;
2074 /* Allocate room for the header. */
2075 if (s->size == 0)
2077 s->size = htab->plt_header_size;
2079 /* Allocate space for the .rela.plt.unloaded relocations. */
2080 if (htab->elf.target_os == is_vxworks
2081 && !bfd_link_pic (info))
2082 htab->srelplt2->size = sizeof (Elf32_External_Rela) * 2;
2085 /* The procedure linkage table size is bounded by the magnitude
2086 of the offset we can describe in the entry. */
2087 if (s->size >= (SPARC_ELF_WORD_BYTES(htab) == 8 ?
2088 (((bfd_vma)1 << 31) << 1) : 0x400000))
2090 bfd_set_error (bfd_error_bad_value);
2091 return false;
2094 if (SPARC_ELF_WORD_BYTES(htab) == 8
2095 && s->size >= PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE)
2097 bfd_vma off = s->size - PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE;
2100 off = (off % (160 * PLT64_ENTRY_SIZE)) / PLT64_ENTRY_SIZE;
2102 h->plt.offset = (s->size - (off * 8));
2104 else
2105 h->plt.offset = s->size;
2107 /* If this symbol is not defined in a regular file, and we are
2108 not generating a shared library, then set the symbol to this
2109 location in the .plt. This is required to make function
2110 pointers compare as equal between the normal executable and
2111 the shared library. */
2112 if (! bfd_link_pic (info)
2113 && !h->def_regular)
2115 h->root.u.def.section = s;
2116 h->root.u.def.value = h->plt.offset;
2119 /* Make room for this entry. */
2120 s->size += htab->plt_entry_size;
2122 /* There should be no PLT relocations against resolved undefined
2123 weak symbols in the executable. */
2124 if (!resolved_to_zero)
2126 /* We also need to make an entry in the .rela.plt section. */
2127 if (s == htab->elf.splt)
2128 htab->elf.srelplt->size += SPARC_ELF_RELA_BYTES (htab);
2129 else
2130 htab->elf.irelplt->size += SPARC_ELF_RELA_BYTES (htab);
2133 if (htab->elf.target_os == is_vxworks)
2135 /* Allocate space for the .got.plt entry. */
2136 htab->elf.sgotplt->size += 4;
2138 /* ...and for the .rela.plt.unloaded relocations. */
2139 if (!bfd_link_pic (info))
2140 htab->srelplt2->size += sizeof (Elf32_External_Rela) * 3;
2143 else
2145 h->plt.offset = (bfd_vma) -1;
2146 h->needs_plt = 0;
2149 else
2151 h->plt.offset = (bfd_vma) -1;
2152 h->needs_plt = 0;
2155 /* If R_SPARC_TLS_IE_{HI22,LO10} symbol is now local to the binary,
2156 make it a R_SPARC_TLS_LE_{HI22,LO10} requiring no TLS entry. */
2157 if (h->got.refcount > 0
2158 && bfd_link_executable (info)
2159 && h->dynindx == -1
2160 && _bfd_sparc_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
2161 h->got.offset = (bfd_vma) -1;
2162 else if (h->got.refcount > 0)
2164 asection *s;
2165 bool dyn;
2166 int tls_type = _bfd_sparc_elf_hash_entry(h)->tls_type;
2168 /* Undefined weak syms won't yet be marked as dynamic. */
2169 if (h->root.type == bfd_link_hash_undefweak
2170 && !resolved_to_zero
2171 && h->dynindx == -1
2172 && !h->forced_local)
2174 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2175 return false;
2178 s = htab->elf.sgot;
2179 h->got.offset = s->size;
2180 s->size += SPARC_ELF_WORD_BYTES (htab);
2181 /* R_SPARC_TLS_GD_HI{22,LO10} needs 2 consecutive GOT slots. */
2182 if (tls_type == GOT_TLS_GD)
2183 s->size += SPARC_ELF_WORD_BYTES (htab);
2184 dyn = htab->elf.dynamic_sections_created;
2185 /* R_SPARC_TLS_IE_{HI22,LO10} needs one dynamic relocation,
2186 R_SPARC_TLS_GD_{HI22,LO10} needs one if local and two if global. */
2187 if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
2188 || tls_type == GOT_TLS_IE
2189 || h->type == STT_GNU_IFUNC)
2190 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2191 else if (tls_type == GOT_TLS_GD)
2192 htab->elf.srelgot->size += 2 * SPARC_ELF_RELA_BYTES (htab);
2193 else if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)
2194 /* Even if the symbol isn't dynamic, we may generate a
2195 reloc for the dynamic linker in PIC mode. */
2196 || (h->dynindx == -1
2197 && !h->forced_local
2198 && h->root.type != bfd_link_hash_undefweak
2199 && bfd_link_pic (info)))
2200 /* No dynamic relocations are needed against resolved
2201 undefined weak symbols in an executable. */
2202 && !(h->root.type == bfd_link_hash_undefweak
2203 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2204 || resolved_to_zero)))
2205 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2207 else
2208 h->got.offset = (bfd_vma) -1;
2210 if (h->dyn_relocs == NULL)
2211 return true;
2213 /* In the shared -Bsymbolic case, discard space allocated for
2214 dynamic pc-relative relocs against symbols which turn out to be
2215 defined in regular objects. For the normal shared case, discard
2216 space for pc-relative relocs that have become local due to symbol
2217 visibility changes. */
2219 if (bfd_link_pic (info))
2221 if (SYMBOL_CALLS_LOCAL (info, h))
2223 struct elf_dyn_relocs **pp;
2225 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2227 p->count -= p->pc_count;
2228 p->pc_count = 0;
2229 if (p->count == 0)
2230 *pp = p->next;
2231 else
2232 pp = &p->next;
2236 if (htab->elf.target_os == is_vxworks)
2238 struct elf_dyn_relocs **pp;
2240 for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
2242 if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2243 *pp = p->next;
2244 else
2245 pp = &p->next;
2249 /* Also discard relocs on undefined weak syms with non-default
2250 visibility or in PIE. */
2251 if (h->dyn_relocs != NULL
2252 && h->root.type == bfd_link_hash_undefweak)
2254 /* An undefined weak symbol is never
2255 bound locally in a shared library. */
2257 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
2258 || resolved_to_zero)
2260 if (h->non_got_ref)
2262 /* Keep dynamic non-GOT/non-PLT relocation so that we
2263 can branch to 0 without PLT. */
2264 struct elf_dyn_relocs **pp;
2266 for (pp = &h->dyn_relocs; (p = *pp) != NULL;)
2267 if (p->pc_count == 0)
2268 *pp = p->next;
2269 else
2271 /* Remove other relocations. */
2272 p->count = p->pc_count;
2273 pp = &p->next;
2276 if (h->dyn_relocs != NULL)
2278 /* Make sure undefined weak symbols are output
2279 as dynamic symbols in PIEs for dynamic non-GOT
2280 non-PLT reloations. */
2281 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2282 return false;
2285 else
2286 h->dyn_relocs = NULL;
2289 /* Make sure undefined weak symbols are output as a dynamic
2290 symbol in PIEs. */
2291 else if (h->dynindx == -1
2292 && !h->forced_local)
2294 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2295 return false;
2299 else
2301 /* For the non-shared case, discard space for relocs against
2302 symbols which turn out to need copy relocs or are not
2303 dynamic. */
2305 if ((!h->non_got_ref
2306 || (h->root.type == bfd_link_hash_undefweak
2307 && !resolved_to_zero))
2308 && ((h->def_dynamic
2309 && !h->def_regular)
2310 || (htab->elf.dynamic_sections_created
2311 && (h->root.type == bfd_link_hash_undefweak
2312 || h->root.type == bfd_link_hash_undefined))))
2314 /* Undefined weak syms won't yet be marked as dynamic. */
2315 if (h->root.type == bfd_link_hash_undefweak
2316 && !resolved_to_zero
2317 && h->dynindx == -1
2318 && !h->forced_local)
2320 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2321 return false;
2324 /* If that succeeded, we know we'll be keeping all the
2325 relocs. */
2326 if (h->dynindx != -1)
2327 goto keep;
2330 h->dyn_relocs = NULL;
2332 keep: ;
2335 /* Finally, allocate space. */
2336 for (p = h->dyn_relocs; p != NULL; p = p->next)
2338 asection *sreloc = elf_section_data (p->sec)->sreloc;
2339 sreloc->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2342 return true;
2345 /* Allocate space in .plt, .got and associated reloc sections for
2346 local dynamic relocs. */
2348 static int
2349 allocate_local_dynrelocs (void **slot, void *inf)
2351 struct elf_link_hash_entry *h
2352 = (struct elf_link_hash_entry *) *slot;
2354 if (h->type != STT_GNU_IFUNC
2355 || !h->def_regular
2356 || !h->ref_regular
2357 || !h->forced_local
2358 || h->root.type != bfd_link_hash_defined)
2359 abort ();
2361 return allocate_dynrelocs (h, inf);
2364 /* Return true if the dynamic symbol for a given section should be
2365 omitted when creating a shared library. */
2367 bool
2368 _bfd_sparc_elf_omit_section_dynsym (bfd *output_bfd,
2369 struct bfd_link_info *info,
2370 asection *p)
2372 /* We keep the .got section symbol so that explicit relocations
2373 against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
2374 can be turned into relocations against the .got symbol. */
2375 if (strcmp (p->name, ".got") == 0)
2376 return false;
2378 return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
2381 /* Set the sizes of the dynamic sections. */
2383 bool
2384 _bfd_sparc_elf_size_dynamic_sections (bfd *output_bfd,
2385 struct bfd_link_info *info)
2387 struct _bfd_sparc_elf_link_hash_table *htab;
2388 bfd *dynobj;
2389 asection *s;
2390 bfd *ibfd;
2392 htab = _bfd_sparc_elf_hash_table (info);
2393 BFD_ASSERT (htab != NULL);
2394 dynobj = htab->elf.dynobj;
2395 BFD_ASSERT (dynobj != NULL);
2397 if (elf_hash_table (info)->dynamic_sections_created)
2399 /* Set the contents of the .interp section to the interpreter. */
2400 if (bfd_link_executable (info) && !info->nointerp)
2402 s = bfd_get_linker_section (dynobj, ".interp");
2403 BFD_ASSERT (s != NULL);
2404 s->size = htab->dynamic_interpreter_size;
2405 s->contents = (unsigned char *) htab->dynamic_interpreter;
2406 htab->interp = s;
2410 /* Set up .got offsets for local syms, and space for local dynamic
2411 relocs. */
2412 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
2414 bfd_signed_vma *local_got;
2415 bfd_signed_vma *end_local_got;
2416 char *local_tls_type;
2417 bfd_size_type locsymcount;
2418 Elf_Internal_Shdr *symtab_hdr;
2419 asection *srel;
2421 if (! is_sparc_elf (ibfd))
2422 continue;
2424 for (s = ibfd->sections; s != NULL; s = s->next)
2426 struct elf_dyn_relocs *p;
2428 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
2430 if (!bfd_is_abs_section (p->sec)
2431 && bfd_is_abs_section (p->sec->output_section))
2433 /* Input section has been discarded, either because
2434 it is a copy of a linkonce section or due to
2435 linker script /DISCARD/, so we'll be discarding
2436 the relocs too. */
2438 else if (htab->elf.target_os == is_vxworks
2439 && strcmp (p->sec->output_section->name,
2440 ".tls_vars") == 0)
2442 /* Relocations in vxworks .tls_vars sections are
2443 handled specially by the loader. */
2445 else if (p->count != 0)
2447 srel = elf_section_data (p->sec)->sreloc;
2448 if (!htab->elf.dynamic_sections_created)
2449 srel = htab->elf.irelplt;
2450 srel->size += p->count * SPARC_ELF_RELA_BYTES (htab);
2451 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2453 info->flags |= DF_TEXTREL;
2454 info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
2455 p->sec->owner, p->sec);
2461 local_got = elf_local_got_refcounts (ibfd);
2462 if (!local_got)
2463 continue;
2465 symtab_hdr = &elf_symtab_hdr (ibfd);
2466 locsymcount = symtab_hdr->sh_info;
2467 end_local_got = local_got + locsymcount;
2468 local_tls_type = _bfd_sparc_elf_local_got_tls_type (ibfd);
2469 s = htab->elf.sgot;
2470 srel = htab->elf.srelgot;
2471 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
2473 if (*local_got > 0)
2475 *local_got = s->size;
2476 s->size += SPARC_ELF_WORD_BYTES (htab);
2477 if (*local_tls_type == GOT_TLS_GD)
2478 s->size += SPARC_ELF_WORD_BYTES (htab);
2479 if (bfd_link_pic (info)
2480 || *local_tls_type == GOT_TLS_GD
2481 || *local_tls_type == GOT_TLS_IE)
2482 srel->size += SPARC_ELF_RELA_BYTES (htab);
2484 else
2485 *local_got = (bfd_vma) -1;
2489 if (htab->tls_ldm_got.refcount > 0)
2491 /* Allocate 2 got entries and 1 dynamic reloc for
2492 R_SPARC_TLS_LDM_{HI22,LO10} relocs. */
2493 htab->tls_ldm_got.offset = htab->elf.sgot->size;
2494 htab->elf.sgot->size += (2 * SPARC_ELF_WORD_BYTES (htab));
2495 htab->elf.srelgot->size += SPARC_ELF_RELA_BYTES (htab);
2497 else
2498 htab->tls_ldm_got.offset = -1;
2500 /* Allocate global sym .plt and .got entries, and space for global
2501 sym dynamic relocs. */
2502 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
2504 /* Allocate .plt and .got entries, and space for local symbols. */
2505 htab_traverse (htab->loc_hash_table, allocate_local_dynrelocs, info);
2507 if (! ABI_64_P (output_bfd)
2508 && htab->elf.target_os != is_vxworks
2509 && elf_hash_table (info)->dynamic_sections_created)
2511 /* Make space for the trailing nop in .plt. */
2512 if (htab->elf.splt->size > 0)
2513 htab->elf.splt->size += 1 * SPARC_INSN_BYTES;
2515 /* If the .got section is more than 0x1000 bytes, we add
2516 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
2517 bit relocations have a greater chance of working.
2519 FIXME: Make this optimization work for 64-bit too. */
2520 if (htab->elf.sgot->size >= 0x1000
2521 && elf_hash_table (info)->hgot->root.u.def.value == 0)
2522 elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
2525 /* The check_relocs and adjust_dynamic_symbol entry points have
2526 determined the sizes of the various dynamic sections. Allocate
2527 memory for them. */
2528 for (s = dynobj->sections; s != NULL; s = s->next)
2530 if ((s->flags & SEC_LINKER_CREATED) == 0)
2531 continue;
2533 if (s == htab->elf.splt
2534 || s == htab->elf.sgot
2535 || s == htab->elf.sdynbss
2536 || s == htab->elf.sdynrelro
2537 || s == htab->elf.iplt
2538 || s == htab->elf.sgotplt)
2540 /* Strip this section if we don't need it; see the
2541 comment below. */
2543 else if (startswith (s->name, ".rela"))
2545 if (s->size != 0)
2547 /* We use the reloc_count field as a counter if we need
2548 to copy relocs into the output file. */
2549 s->reloc_count = 0;
2552 else
2554 /* It's not one of our sections. */
2555 continue;
2558 if (s->size == 0)
2560 /* If we don't need this section, strip it from the
2561 output file. This is mostly to handle .rela.bss and
2562 .rela.plt. We must create both sections in
2563 create_dynamic_sections, because they must be created
2564 before the linker maps input sections to output
2565 sections. The linker does that before
2566 adjust_dynamic_symbol is called, and it is that
2567 function which decides whether anything needs to go
2568 into these sections. */
2569 s->flags |= SEC_EXCLUDE;
2570 continue;
2573 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2574 continue;
2576 /* Allocate memory for the section contents. Zero the memory
2577 for the benefit of .rela.plt, which has 4 unused entries
2578 at the beginning, and we don't want garbage. */
2579 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
2580 if (s->contents == NULL)
2581 return false;
2584 if (elf_hash_table (info)->dynamic_sections_created)
2586 /* Add some entries to the .dynamic section. We fill in the
2587 values later, in _bfd_sparc_elf_finish_dynamic_sections, but we
2588 must add the entries now so that we get the correct size for
2589 the .dynamic section. The DT_DEBUG entry is filled in by the
2590 dynamic linker and used by the debugger. */
2591 #define add_dynamic_entry(TAG, VAL) \
2592 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2594 if (!_bfd_elf_maybe_vxworks_add_dynamic_tags (output_bfd, info,
2595 true))
2596 return false;
2598 if (ABI_64_P (output_bfd))
2600 int reg;
2601 struct _bfd_sparc_elf_app_reg * app_regs;
2602 struct elf_strtab_hash *dynstr;
2603 struct elf_link_hash_table *eht = elf_hash_table (info);
2605 /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
2606 entries if needed. */
2607 app_regs = _bfd_sparc_elf_hash_table (info)->app_regs;
2608 dynstr = eht->dynstr;
2610 for (reg = 0; reg < 4; reg++)
2611 if (app_regs [reg].name != NULL)
2613 struct elf_link_local_dynamic_entry *entry, *e;
2615 if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
2616 return false;
2618 entry = (struct elf_link_local_dynamic_entry *)
2619 bfd_hash_allocate (&info->hash->table, sizeof (*entry));
2620 if (entry == NULL)
2621 return false;
2623 /* We cheat here a little bit: the symbol will not be local, so we
2624 put it at the end of the dynlocal linked list. We will fix it
2625 later on, as we have to fix other fields anyway. */
2626 entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
2627 entry->isym.st_size = 0;
2628 if (*app_regs [reg].name != '\0')
2629 entry->isym.st_name
2630 = _bfd_elf_strtab_add (dynstr, app_regs[reg].name, false);
2631 else
2632 entry->isym.st_name = 0;
2633 entry->isym.st_other = 0;
2634 entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
2635 STT_REGISTER);
2636 entry->isym.st_shndx = app_regs [reg].shndx;
2637 entry->isym.st_target_internal = 0;
2638 entry->next = NULL;
2639 entry->input_bfd = output_bfd;
2640 entry->input_indx = -1;
2642 if (eht->dynlocal == NULL)
2643 eht->dynlocal = entry;
2644 else
2646 for (e = eht->dynlocal; e->next; e = e->next)
2648 e->next = entry;
2650 eht->dynsymcount++;
2654 #undef add_dynamic_entry
2656 return true;
2659 bool
2660 _bfd_sparc_elf_new_section_hook (bfd *abfd, asection *sec)
2662 if (!sec->used_by_bfd)
2664 struct _bfd_sparc_elf_section_data *sdata;
2665 size_t amt = sizeof (*sdata);
2667 sdata = bfd_zalloc (abfd, amt);
2668 if (sdata == NULL)
2669 return false;
2670 sec->used_by_bfd = sdata;
2673 return _bfd_elf_new_section_hook (abfd, sec);
2676 bool
2677 _bfd_sparc_elf_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
2678 struct bfd_section *section,
2679 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
2680 bool *again)
2682 if (bfd_link_relocatable (link_info))
2683 (*link_info->callbacks->einfo)
2684 (_("%P%F: --relax and -r may not be used together\n"));
2686 *again = false;
2687 sec_do_relax (section) = 1;
2688 return true;
2691 /* Return the base VMA address which should be subtracted from real addresses
2692 when resolving @dtpoff relocation.
2693 This is PT_TLS segment p_vaddr. */
2695 static bfd_vma
2696 dtpoff_base (struct bfd_link_info *info)
2698 /* If tls_sec is NULL, we should have signalled an error already. */
2699 if (elf_hash_table (info)->tls_sec == NULL)
2700 return 0;
2701 return elf_hash_table (info)->tls_sec->vma;
2704 /* Return the relocation value for @tpoff relocation
2705 if STT_TLS virtual address is ADDRESS. */
2707 static bfd_vma
2708 tpoff (struct bfd_link_info *info, bfd_vma address)
2710 struct elf_link_hash_table *htab = elf_hash_table (info);
2711 const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
2712 bfd_vma static_tls_size;
2714 /* If tls_sec is NULL, we should have signalled an error already. */
2715 if (htab->tls_sec == NULL)
2716 return 0;
2718 /* Consider special static TLS alignment requirements. */
2719 static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
2720 return address - static_tls_size - htab->tls_sec->vma;
2723 /* Return the relocation value for a %gdop relocation. */
2725 static bfd_vma
2726 gdopoff (struct bfd_link_info *info, bfd_vma address)
2728 struct elf_link_hash_table *htab = elf_hash_table (info);
2729 bfd_vma got_base;
2731 got_base = (htab->hgot->root.u.def.value
2732 + htab->hgot->root.u.def.section->output_offset
2733 + htab->hgot->root.u.def.section->output_section->vma);
2735 return address - got_base;
2738 /* Return whether H is local and its ADDRESS is within 4G of
2739 _GLOBAL_OFFSET_TABLE_ and thus the offset may be calculated by a
2740 sethi, xor sequence. */
2742 static bool
2743 gdop_relative_offset_ok (struct bfd_link_info *info,
2744 struct elf_link_hash_entry *h,
2745 bfd_vma address ATTRIBUTE_UNUSED)
2747 if (!SYMBOL_REFERENCES_LOCAL (info, h))
2748 return false;
2749 /* If H is undefined, ADDRESS will be zero. We can't allow a
2750 relative offset to "zero" when producing PIEs or shared libs.
2751 Note that to get here with an undefined symbol it must also be
2752 hidden or internal visibility. */
2753 if (bfd_link_pic (info)
2754 && h != NULL
2755 && (h->root.type == bfd_link_hash_undefweak
2756 || h->root.type == bfd_link_hash_undefined))
2757 return false;
2758 #ifdef BFD64
2759 return gdopoff (info, address) + ((bfd_vma) 1 << 32) < (bfd_vma) 2 << 32;
2760 #else
2761 return true;
2762 #endif
2765 /* Relocate a SPARC ELF section. */
2768 _bfd_sparc_elf_relocate_section (bfd *output_bfd,
2769 struct bfd_link_info *info,
2770 bfd *input_bfd,
2771 asection *input_section,
2772 bfd_byte *contents,
2773 Elf_Internal_Rela *relocs,
2774 Elf_Internal_Sym *local_syms,
2775 asection **local_sections)
2777 struct _bfd_sparc_elf_link_hash_table *htab;
2778 Elf_Internal_Shdr *symtab_hdr;
2779 struct elf_link_hash_entry **sym_hashes;
2780 bfd_vma *local_got_offsets;
2781 bfd_vma got_base;
2782 asection *sreloc;
2783 Elf_Internal_Rela *rel;
2784 Elf_Internal_Rela *relend;
2785 int num_relocs;
2786 bool is_vxworks_tls;
2788 htab = _bfd_sparc_elf_hash_table (info);
2789 BFD_ASSERT (htab != NULL);
2790 symtab_hdr = &elf_symtab_hdr (input_bfd);
2791 sym_hashes = elf_sym_hashes (input_bfd);
2792 local_got_offsets = elf_local_got_offsets (input_bfd);
2794 if (elf_hash_table (info)->hgot == NULL)
2795 got_base = 0;
2796 else
2797 got_base = elf_hash_table (info)->hgot->root.u.def.value;
2799 sreloc = elf_section_data (input_section)->sreloc;
2800 /* We have to handle relocations in vxworks .tls_vars sections
2801 specially, because the dynamic loader is 'weird'. */
2802 is_vxworks_tls = (htab->elf.target_os == is_vxworks
2803 && bfd_link_pic (info)
2804 && !strcmp (input_section->output_section->name,
2805 ".tls_vars"));
2807 rel = relocs;
2808 if (ABI_64_P (output_bfd))
2809 num_relocs = NUM_SHDR_ENTRIES (_bfd_elf_single_rel_hdr (input_section));
2810 else
2811 num_relocs = input_section->reloc_count;
2812 relend = relocs + num_relocs;
2813 for (; rel < relend; rel++)
2815 int r_type, tls_type;
2816 reloc_howto_type *howto;
2817 unsigned long r_symndx;
2818 struct elf_link_hash_entry *h;
2819 struct _bfd_sparc_elf_link_hash_entry *eh;
2820 Elf_Internal_Sym *sym;
2821 asection *sec;
2822 bfd_vma relocation, off;
2823 bfd_reloc_status_type r;
2824 bool is_plt = false;
2825 bool unresolved_reloc;
2826 bool resolved_to_zero;
2827 bool relative_reloc;
2829 r_type = SPARC_ELF_R_TYPE (rel->r_info);
2830 if (r_type == R_SPARC_GNU_VTINHERIT
2831 || r_type == R_SPARC_GNU_VTENTRY)
2832 continue;
2834 if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
2836 bfd_set_error (bfd_error_bad_value);
2837 return false;
2840 howto = _bfd_sparc_elf_howto_table + r_type;
2841 r_symndx = SPARC_ELF_R_SYMNDX (htab, rel->r_info);
2842 h = NULL;
2843 sym = NULL;
2844 sec = NULL;
2845 unresolved_reloc = false;
2846 if (r_symndx < symtab_hdr->sh_info)
2848 sym = local_syms + r_symndx;
2849 sec = local_sections[r_symndx];
2850 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2852 if (!bfd_link_relocatable (info)
2853 && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2855 /* Relocate against local STT_GNU_IFUNC symbol. */
2856 h = elf_sparc_get_local_sym_hash (htab, input_bfd,
2857 rel, false);
2858 if (h == NULL)
2859 abort ();
2861 /* Set STT_GNU_IFUNC symbol value. */
2862 h->root.u.def.value = sym->st_value;
2863 h->root.u.def.section = sec;
2866 else
2868 bool warned, ignored;
2870 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2871 r_symndx, symtab_hdr, sym_hashes,
2872 h, sec, relocation,
2873 unresolved_reloc, warned, ignored);
2874 if (warned)
2876 /* To avoid generating warning messages about truncated
2877 relocations, set the relocation's address to be the same as
2878 the start of this section. */
2879 if (input_section->output_section != NULL)
2880 relocation = input_section->output_section->vma;
2881 else
2882 relocation = 0;
2886 if (sec != NULL && discarded_section (sec))
2887 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2888 rel, 1, relend, howto, 0, contents);
2890 if (bfd_link_relocatable (info))
2891 continue;
2893 if (h != NULL
2894 && h->type == STT_GNU_IFUNC
2895 && h->def_regular)
2897 asection *plt_sec;
2898 const char *name;
2900 if ((input_section->flags & SEC_ALLOC) == 0
2901 || h->plt.offset == (bfd_vma) -1)
2903 /* If this is a SHT_NOTE section without SHF_ALLOC, treat
2904 STT_GNU_IFUNC symbol as STT_FUNC. */
2905 if (elf_section_type (input_section) == SHT_NOTE)
2906 goto skip_ifunc;
2908 /* Dynamic relocs are not propagated for SEC_DEBUGGING
2909 sections because such sections are not SEC_ALLOC and
2910 thus ld.so will not process them. */
2911 if ((input_section->flags & SEC_ALLOC) == 0
2912 && (input_section->flags & SEC_DEBUGGING) != 0)
2913 continue;
2915 _bfd_error_handler
2916 /* xgettext:c-format */
2917 (_("%pB(%pA+%#" PRIx64 "): "
2918 "unresolvable %s relocation against symbol `%s'"),
2919 input_bfd,
2920 input_section,
2921 (uint64_t) rel->r_offset,
2922 howto->name,
2923 h->root.root.string);
2924 bfd_set_error (bfd_error_bad_value);
2925 return false;
2928 plt_sec = htab->elf.splt;
2929 if (! plt_sec)
2930 plt_sec =htab->elf.iplt;
2932 switch (r_type)
2934 case R_SPARC_GOTDATA_OP:
2935 continue;
2937 case R_SPARC_GOTDATA_OP_HIX22:
2938 case R_SPARC_GOTDATA_OP_LOX10:
2939 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
2940 ? R_SPARC_GOT22
2941 : R_SPARC_GOT10);
2942 howto = _bfd_sparc_elf_howto_table + r_type;
2943 /* Fall through. */
2945 case R_SPARC_GOT10:
2946 case R_SPARC_GOT13:
2947 case R_SPARC_GOT22:
2948 if (htab->elf.sgot == NULL)
2949 abort ();
2950 off = h->got.offset;
2951 if (off == (bfd_vma) -1)
2952 abort();
2953 relocation = htab->elf.sgot->output_offset + off - got_base;
2954 goto do_relocation;
2956 case R_SPARC_WPLT30:
2957 case R_SPARC_WDISP30:
2958 relocation = (plt_sec->output_section->vma
2959 + plt_sec->output_offset + h->plt.offset);
2960 goto do_relocation;
2962 case R_SPARC_32:
2963 case R_SPARC_64:
2964 if (bfd_link_pic (info) && h->non_got_ref)
2966 Elf_Internal_Rela outrel;
2967 bfd_vma offset;
2969 offset = _bfd_elf_section_offset (output_bfd, info,
2970 input_section,
2971 rel->r_offset);
2972 if (offset == (bfd_vma) -1
2973 || offset == (bfd_vma) -2)
2974 abort();
2976 outrel.r_offset = (input_section->output_section->vma
2977 + input_section->output_offset
2978 + offset);
2980 if (h->dynindx == -1
2981 || h->forced_local
2982 || bfd_link_executable (info))
2984 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
2985 0, R_SPARC_IRELATIVE);
2986 outrel.r_addend = relocation + rel->r_addend;
2988 else
2990 if (h->dynindx == -1)
2991 abort();
2992 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
2993 outrel.r_addend = rel->r_addend;
2996 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
2997 continue;
3000 relocation = (plt_sec->output_section->vma
3001 + plt_sec->output_offset + h->plt.offset);
3002 goto do_relocation;
3004 case R_SPARC_HI22:
3005 case R_SPARC_LO10:
3006 /* We should only see such relocs in static links. */
3007 if (bfd_link_pic (info))
3008 abort();
3009 relocation = (plt_sec->output_section->vma
3010 + plt_sec->output_offset + h->plt.offset);
3011 goto do_relocation;
3013 default:
3014 if (h->root.root.string)
3015 name = h->root.root.string;
3016 else
3017 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3018 NULL);
3019 _bfd_error_handler
3020 /* xgettext:c-format */
3021 (_("%pB: relocation %s against STT_GNU_IFUNC "
3022 "symbol `%s' isn't handled by %s"), input_bfd,
3023 _bfd_sparc_elf_howto_table[r_type].name,
3024 name, __FUNCTION__);
3025 bfd_set_error (bfd_error_bad_value);
3026 return false;
3030 skip_ifunc:
3031 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
3032 resolved_to_zero = eh && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
3034 switch (r_type)
3036 case R_SPARC_GOTDATA_OP_HIX22:
3037 case R_SPARC_GOTDATA_OP_LOX10:
3038 if (gdop_relative_offset_ok (info, h, relocation))
3040 r_type = (r_type == R_SPARC_GOTDATA_OP_HIX22
3041 ? R_SPARC_GOTDATA_HIX22
3042 : R_SPARC_GOTDATA_LOX10);
3043 howto = _bfd_sparc_elf_howto_table + r_type;
3045 break;
3047 case R_SPARC_GOTDATA_OP:
3048 if (gdop_relative_offset_ok (info, h, relocation))
3050 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3052 /* {ld,ldx} [%rs1 + %rs2], %rd --> add %rs1, %rs2, %rd */
3053 relocation = 0x80000000 | (insn & 0x3e07c01f);
3054 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3056 /* If the symbol is global but not dynamic, an .rela.* slot has
3057 been allocated for it in the GOT so output R_SPARC_NONE here,
3058 if it isn't also subject to another, old-style GOT relocation.
3059 See also the handling of these GOT relocations just below. */
3060 if (h != NULL
3061 && h->dynindx == -1
3062 && !h->forced_local
3063 && h->root.type != bfd_link_hash_undefweak
3064 && !eh->has_old_style_got_reloc
3065 && (h->got.offset & 1) == 0
3066 && bfd_link_pic (info))
3068 asection *s = htab->elf.srelgot;
3069 Elf_Internal_Rela outrel;
3071 BFD_ASSERT (s != NULL);
3073 memset (&outrel, 0, sizeof outrel);
3074 sparc_elf_append_rela (output_bfd, s, &outrel);
3075 h->got.offset |= 1;
3078 continue;
3081 switch (r_type)
3083 case R_SPARC_GOTDATA_HIX22:
3084 case R_SPARC_GOTDATA_LOX10:
3085 relocation = gdopoff (info, relocation);
3086 break;
3088 case R_SPARC_GOTDATA_OP_HIX22:
3089 case R_SPARC_GOTDATA_OP_LOX10:
3090 case R_SPARC_GOT10:
3091 case R_SPARC_GOT13:
3092 case R_SPARC_GOT22:
3093 /* Relocation is to the entry for this symbol in the global
3094 offset table. */
3095 if (htab->elf.sgot == NULL)
3096 abort ();
3098 relative_reloc = false;
3099 if (h != NULL)
3101 bool dyn;
3103 off = h->got.offset;
3104 BFD_ASSERT (off != (bfd_vma) -1);
3105 dyn = elf_hash_table (info)->dynamic_sections_created;
3107 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
3108 bfd_link_pic (info),
3110 || (bfd_link_pic (info)
3111 && SYMBOL_REFERENCES_LOCAL (info, h)))
3113 /* This is actually a static link, or it is a
3114 -Bsymbolic link and the symbol is defined
3115 locally, or the symbol was forced to be local
3116 because of a version file. We must initialize
3117 this entry in the global offset table. Since the
3118 offset must always be a multiple of 8 for 64-bit
3119 and 4 for 32-bit, we use the least significant bit
3120 to record whether we have initialized it already.
3122 When doing a dynamic link, we create a .rela.got
3123 relocation entry to initialize the value. This
3124 is done in the finish_dynamic_symbol routine. */
3125 if ((off & 1) != 0)
3126 off &= ~1;
3127 else
3129 /* If this symbol isn't dynamic in PIC mode, treat it
3130 like a local symbol in PIC mode below. */
3131 if (h->dynindx == -1
3132 && !h->forced_local
3133 && h->root.type != bfd_link_hash_undefweak
3134 && bfd_link_pic (info))
3135 relative_reloc = true;
3136 else
3137 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3138 htab->elf.sgot->contents + off);
3139 h->got.offset |= 1;
3142 else
3143 unresolved_reloc = false;
3145 else
3147 BFD_ASSERT (local_got_offsets != NULL
3148 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3150 off = local_got_offsets[r_symndx];
3152 /* The offset must always be a multiple of 8 on 64-bit and
3153 4 on 32-bit. We use the least significant bit to record
3154 whether we have already processed this entry. */
3155 if ((off & 1) != 0)
3156 off &= ~1;
3157 else
3159 /* For a local symbol in PIC mode, we need to generate a
3160 R_SPARC_RELATIVE reloc for the dynamic linker. */
3161 if (bfd_link_pic (info))
3162 relative_reloc = true;
3163 else
3164 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3165 htab->elf.sgot->contents + off);
3166 local_got_offsets[r_symndx] |= 1;
3170 if (relative_reloc)
3172 asection *s = htab->elf.srelgot;
3173 Elf_Internal_Rela outrel;
3175 BFD_ASSERT (s != NULL);
3177 outrel.r_offset = (htab->elf.sgot->output_section->vma
3178 + htab->elf.sgot->output_offset
3179 + off);
3180 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3181 0, R_SPARC_RELATIVE);
3182 outrel.r_addend = relocation;
3183 sparc_elf_append_rela (output_bfd, s, &outrel);
3184 /* Versions of glibc ld.so at least up to 2.26 wrongly
3185 add the section contents to the value calculated for
3186 a RELATIVE reloc. Zero the contents to work around
3187 this bug. */
3188 relocation = 0;
3189 SPARC_ELF_PUT_WORD (htab, output_bfd, relocation,
3190 htab->elf.sgot->contents + off);
3193 relocation = htab->elf.sgot->output_offset + off - got_base;
3194 break;
3196 case R_SPARC_PLT32:
3197 case R_SPARC_PLT64:
3198 if (h == NULL || h->plt.offset == (bfd_vma) -1)
3200 r_type = (r_type == R_SPARC_PLT32) ? R_SPARC_32 : R_SPARC_64;
3201 goto r_sparc_plt32;
3203 /* Fall through. */
3205 case R_SPARC_WPLT30:
3206 case R_SPARC_HIPLT22:
3207 case R_SPARC_LOPLT10:
3208 case R_SPARC_PCPLT32:
3209 case R_SPARC_PCPLT22:
3210 case R_SPARC_PCPLT10:
3211 r_sparc_wplt30:
3212 /* Relocation is to the entry for this symbol in the
3213 procedure linkage table. */
3215 if (! ABI_64_P (output_bfd))
3217 /* The Solaris native assembler will generate a WPLT30 reloc
3218 for a local symbol if you assemble a call from one
3219 section to another when using -K pic. We treat it as
3220 WDISP30. */
3221 if (h == NULL)
3222 break;
3224 /* PR 7027: We need similar behaviour for 64-bit binaries. */
3225 else if (r_type == R_SPARC_WPLT30 && h == NULL)
3226 break;
3227 else
3229 BFD_ASSERT (h != NULL);
3232 if (h->plt.offset == (bfd_vma) -1 || htab->elf.splt == NULL)
3234 /* We didn't make a PLT entry for this symbol. This
3235 happens when statically linking PIC code, or when
3236 using -Bsymbolic. */
3237 break;
3240 relocation = (htab->elf.splt->output_section->vma
3241 + htab->elf.splt->output_offset
3242 + h->plt.offset);
3243 unresolved_reloc = false;
3244 if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
3246 r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64;
3247 is_plt = true;
3248 goto r_sparc_plt32;
3250 break;
3252 case R_SPARC_PC10:
3253 case R_SPARC_PC22:
3254 case R_SPARC_PC_HH22:
3255 case R_SPARC_PC_HM10:
3256 case R_SPARC_PC_LM22:
3257 if (h != NULL
3258 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3259 break;
3260 /* Fall through. */
3261 case R_SPARC_DISP8:
3262 case R_SPARC_DISP16:
3263 case R_SPARC_DISP32:
3264 case R_SPARC_DISP64:
3265 case R_SPARC_WDISP30:
3266 case R_SPARC_WDISP22:
3267 case R_SPARC_WDISP19:
3268 case R_SPARC_WDISP16:
3269 case R_SPARC_WDISP10:
3270 case R_SPARC_8:
3271 case R_SPARC_16:
3272 case R_SPARC_32:
3273 case R_SPARC_HI22:
3274 case R_SPARC_22:
3275 case R_SPARC_13:
3276 case R_SPARC_LO10:
3277 case R_SPARC_UA16:
3278 case R_SPARC_UA32:
3279 case R_SPARC_10:
3280 case R_SPARC_11:
3281 case R_SPARC_64:
3282 case R_SPARC_OLO10:
3283 case R_SPARC_HH22:
3284 case R_SPARC_HM10:
3285 case R_SPARC_LM22:
3286 case R_SPARC_7:
3287 case R_SPARC_5:
3288 case R_SPARC_6:
3289 case R_SPARC_HIX22:
3290 case R_SPARC_LOX10:
3291 case R_SPARC_H44:
3292 case R_SPARC_M44:
3293 case R_SPARC_L44:
3294 case R_SPARC_H34:
3295 case R_SPARC_UA64:
3296 r_sparc_plt32:
3297 if ((input_section->flags & SEC_ALLOC) == 0 || is_vxworks_tls)
3298 break;
3300 /* Copy dynamic function pointer relocations. Don't generate
3301 dynamic relocations against resolved undefined weak symbols
3302 in PIE. */
3303 if ((bfd_link_pic (info)
3304 && (h == NULL
3305 || !(h->root.type == bfd_link_hash_undefweak
3306 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3307 || resolved_to_zero)))
3308 && (! howto->pc_relative
3309 || !SYMBOL_CALLS_LOCAL (info, h)))
3310 || (!bfd_link_pic (info)
3311 && h != NULL
3312 && h->dynindx != -1
3313 && !h->non_got_ref
3314 && ((h->def_dynamic
3315 && !h->def_regular)
3316 || (h->root.type == bfd_link_hash_undefweak
3317 && !resolved_to_zero)
3318 || h->root.type == bfd_link_hash_undefined)))
3320 Elf_Internal_Rela outrel;
3321 bool skip, relocate = false;
3323 /* When generating a shared object, these relocations
3324 are copied into the output file to be resolved at run
3325 time. */
3327 BFD_ASSERT (sreloc != NULL);
3329 skip = false;
3331 outrel.r_offset =
3332 _bfd_elf_section_offset (output_bfd, info, input_section,
3333 rel->r_offset);
3334 if (outrel.r_offset == (bfd_vma) -1)
3335 skip = true;
3336 else if (outrel.r_offset == (bfd_vma) -2)
3337 skip = true, relocate = true;
3338 outrel.r_offset += (input_section->output_section->vma
3339 + input_section->output_offset);
3341 /* Optimize unaligned reloc usage now that we know where
3342 it finally resides. */
3343 switch (r_type)
3345 case R_SPARC_16:
3346 if (outrel.r_offset & 1)
3347 r_type = R_SPARC_UA16;
3348 break;
3349 case R_SPARC_UA16:
3350 if (!(outrel.r_offset & 1))
3351 r_type = R_SPARC_16;
3352 break;
3353 case R_SPARC_32:
3354 if (outrel.r_offset & 3)
3355 r_type = R_SPARC_UA32;
3356 break;
3357 case R_SPARC_UA32:
3358 if (!(outrel.r_offset & 3))
3359 r_type = R_SPARC_32;
3360 break;
3361 case R_SPARC_64:
3362 if (outrel.r_offset & 7)
3363 r_type = R_SPARC_UA64;
3364 break;
3365 case R_SPARC_UA64:
3366 if (!(outrel.r_offset & 7))
3367 r_type = R_SPARC_64;
3368 break;
3369 case R_SPARC_DISP8:
3370 case R_SPARC_DISP16:
3371 case R_SPARC_DISP32:
3372 case R_SPARC_DISP64:
3373 /* If the symbol is not dynamic, we should not keep
3374 a dynamic relocation. But an .rela.* slot has been
3375 allocated for it, output R_SPARC_NONE.
3376 FIXME: Add code tracking needed dynamic relocs as
3377 e.g. i386 has. */
3378 if (h->dynindx == -1)
3379 skip = true, relocate = true;
3380 break;
3383 if (skip)
3384 memset (&outrel, 0, sizeof outrel);
3385 /* h->dynindx may be -1 if the symbol was marked to
3386 become local. */
3387 else if (h != NULL
3388 && h->dynindx != -1
3389 && (_bfd_sparc_elf_howto_table[r_type].pc_relative
3390 || !bfd_link_pic (info)
3391 || !SYMBOLIC_BIND (info, h)
3392 || !h->def_regular))
3394 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, h->dynindx, r_type);
3395 outrel.r_addend = rel->r_addend;
3397 else
3399 if ( (!ABI_64_P (output_bfd) && r_type == R_SPARC_32)
3400 || (ABI_64_P (output_bfd) && r_type == R_SPARC_64))
3402 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL,
3403 0, R_SPARC_RELATIVE);
3404 outrel.r_addend = relocation + rel->r_addend;
3406 else
3408 long indx;
3410 outrel.r_addend = relocation + rel->r_addend;
3412 if (is_plt)
3413 sec = htab->elf.splt;
3415 if (bfd_is_abs_section (sec))
3416 indx = 0;
3417 else if (sec == NULL || sec->owner == NULL)
3419 bfd_set_error (bfd_error_bad_value);
3420 return false;
3422 else
3424 asection *osec;
3426 /* We are turning this relocation into one
3427 against a section symbol. It would be
3428 proper to subtract the symbol's value,
3429 osec->vma, from the emitted reloc addend,
3430 but ld.so expects buggy relocs. */
3431 osec = sec->output_section;
3432 indx = elf_section_data (osec)->dynindx;
3434 if (indx == 0)
3436 osec = htab->elf.text_index_section;
3437 indx = elf_section_data (osec)->dynindx;
3440 /* FIXME: we really should be able to link non-pic
3441 shared libraries. */
3442 if (indx == 0)
3444 BFD_FAIL ();
3445 _bfd_error_handler
3446 (_("%pB: probably compiled without -fPIC?"),
3447 input_bfd);
3448 bfd_set_error (bfd_error_bad_value);
3449 return false;
3453 outrel.r_info = SPARC_ELF_R_INFO (htab, rel, indx,
3454 r_type);
3458 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3460 /* This reloc will be computed at runtime, so there's no
3461 need to do anything now. */
3462 if (! relocate)
3463 continue;
3465 break;
3467 case R_SPARC_TLS_GD_HI22:
3468 case R_SPARC_TLS_GD_LO10:
3469 case R_SPARC_TLS_IE_HI22:
3470 case R_SPARC_TLS_IE_LO10:
3471 r_type = sparc_elf_tls_transition (info, input_bfd, r_type,
3472 h == NULL || h->dynindx == -1);
3473 if (r_type == R_SPARC_REV32)
3474 break;
3475 if (h != NULL)
3476 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3477 else if (local_got_offsets)
3478 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3479 else
3480 tls_type = GOT_UNKNOWN;
3481 if (tls_type == GOT_TLS_IE)
3482 switch (r_type)
3484 case R_SPARC_TLS_GD_HI22:
3485 r_type = R_SPARC_TLS_IE_HI22;
3486 break;
3487 case R_SPARC_TLS_GD_LO10:
3488 r_type = R_SPARC_TLS_IE_LO10;
3489 break;
3492 if (r_type == R_SPARC_TLS_LE_HIX22)
3494 relocation = tpoff (info, relocation);
3495 break;
3497 if (r_type == R_SPARC_TLS_LE_LOX10)
3499 /* Change add into xor. */
3500 relocation = tpoff (info, relocation);
3501 bfd_put_32 (output_bfd, (bfd_get_32 (input_bfd,
3502 contents + rel->r_offset)
3503 | 0x80182000), contents + rel->r_offset);
3504 break;
3507 if (h != NULL)
3509 off = h->got.offset;
3510 h->got.offset |= 1;
3512 else
3514 BFD_ASSERT (local_got_offsets != NULL);
3515 off = local_got_offsets[r_symndx];
3516 local_got_offsets[r_symndx] |= 1;
3519 r_sparc_tlsldm:
3520 if (htab->elf.sgot == NULL)
3521 abort ();
3523 if ((off & 1) != 0)
3524 off &= ~1;
3525 else
3527 Elf_Internal_Rela outrel;
3528 int dr_type, indx;
3530 if (htab->elf.srelgot == NULL)
3531 abort ();
3533 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3534 htab->elf.sgot->contents + off);
3535 outrel.r_offset = (htab->elf.sgot->output_section->vma
3536 + htab->elf.sgot->output_offset + off);
3537 indx = h && h->dynindx != -1 ? h->dynindx : 0;
3538 if (r_type == R_SPARC_TLS_IE_HI22
3539 || r_type == R_SPARC_TLS_IE_LO10)
3540 dr_type = SPARC_ELF_TPOFF_RELOC (htab);
3541 else
3542 dr_type = SPARC_ELF_DTPMOD_RELOC (htab);
3543 if (dr_type == SPARC_ELF_TPOFF_RELOC (htab) && indx == 0)
3544 outrel.r_addend = relocation - dtpoff_base (info);
3545 else
3546 outrel.r_addend = 0;
3547 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx, dr_type);
3548 sparc_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
3550 if (r_type == R_SPARC_TLS_GD_HI22
3551 || r_type == R_SPARC_TLS_GD_LO10)
3553 if (indx == 0)
3555 BFD_ASSERT (! unresolved_reloc);
3556 SPARC_ELF_PUT_WORD (htab, output_bfd,
3557 relocation - dtpoff_base (info),
3558 (htab->elf.sgot->contents + off
3559 + SPARC_ELF_WORD_BYTES (htab)));
3561 else
3563 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3564 (htab->elf.sgot->contents + off
3565 + SPARC_ELF_WORD_BYTES (htab)));
3566 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, indx,
3567 SPARC_ELF_DTPOFF_RELOC (htab));
3568 outrel.r_offset += SPARC_ELF_WORD_BYTES (htab);
3569 sparc_elf_append_rela (output_bfd, htab->elf.srelgot,
3570 &outrel);
3573 else if (dr_type == SPARC_ELF_DTPMOD_RELOC (htab))
3575 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
3576 (htab->elf.sgot->contents + off
3577 + SPARC_ELF_WORD_BYTES (htab)));
3581 if (off >= (bfd_vma) -2)
3582 abort ();
3584 relocation = htab->elf.sgot->output_offset + off - got_base;
3585 unresolved_reloc = false;
3586 howto = _bfd_sparc_elf_howto_table + r_type;
3587 break;
3589 case R_SPARC_TLS_LDM_HI22:
3590 case R_SPARC_TLS_LDM_LO10:
3591 /* LD -> LE */
3592 if (bfd_link_executable (info))
3594 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3595 continue;
3597 off = htab->tls_ldm_got.offset;
3598 htab->tls_ldm_got.offset |= 1;
3599 goto r_sparc_tlsldm;
3601 case R_SPARC_TLS_LDO_HIX22:
3602 case R_SPARC_TLS_LDO_LOX10:
3603 /* LD -> LE */
3604 if (bfd_link_executable (info))
3606 if (r_type == R_SPARC_TLS_LDO_HIX22)
3607 r_type = R_SPARC_TLS_LE_HIX22;
3608 else
3609 r_type = R_SPARC_TLS_LE_LOX10;
3611 else
3613 relocation -= dtpoff_base (info);
3614 break;
3616 /* Fall through. */
3618 case R_SPARC_TLS_LE_HIX22:
3619 case R_SPARC_TLS_LE_LOX10:
3620 if (!bfd_link_executable (info))
3622 Elf_Internal_Rela outrel;
3623 bfd_vma offset
3624 = _bfd_elf_section_offset (output_bfd, info, input_section,
3625 rel->r_offset);
3626 if (offset == (bfd_vma) -1 || offset == (bfd_vma) -2)
3627 memset (&outrel, 0, sizeof outrel);
3628 else
3630 outrel.r_offset = offset
3631 + input_section->output_section->vma
3632 + input_section->output_offset;
3633 outrel.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, r_type);
3634 outrel.r_addend
3635 = relocation - dtpoff_base (info) + rel->r_addend;
3638 BFD_ASSERT (sreloc != NULL);
3639 sparc_elf_append_rela (output_bfd, sreloc, &outrel);
3640 continue;
3642 relocation = tpoff (info, relocation);
3643 break;
3645 case R_SPARC_TLS_LDM_CALL:
3646 /* LD -> LE */
3647 if (bfd_link_executable (info))
3649 /* mov %g0, %o0 */
3650 bfd_put_32 (output_bfd, 0x90100000, contents + rel->r_offset);
3651 continue;
3653 /* Fall through */
3655 case R_SPARC_TLS_GD_CALL:
3656 if (h != NULL)
3657 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3658 else if (local_got_offsets)
3659 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3660 else
3661 tls_type = GOT_UNKNOWN;
3662 /* GD -> IE or LE */
3663 if (bfd_link_executable (info)
3664 || (r_type == R_SPARC_TLS_GD_CALL && tls_type == GOT_TLS_IE))
3666 Elf_Internal_Rela *rel2;
3667 bfd_vma insn;
3669 /* GD -> LE */
3670 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3672 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3673 continue;
3676 /* GD -> IE */
3677 if (rel + 1 < relend
3678 && SPARC_ELF_R_TYPE (rel[1].r_info) == R_SPARC_TLS_GD_ADD
3679 && rel[1].r_offset == rel->r_offset + 4
3680 && SPARC_ELF_R_SYMNDX (htab, rel[1].r_info) == r_symndx
3681 && (((insn = bfd_get_32 (input_bfd,
3682 contents + rel[1].r_offset))
3683 >> 25) & 0x1f) == 8)
3685 /* We have
3686 call __tls_get_addr, %tgd_call(foo)
3687 add %reg1, %reg2, %o0, %tgd_add(foo)
3688 and change it into IE:
3689 {ld,ldx} [%reg1 + %reg2], %o0, %tie_ldx(foo)
3690 add %g7, %o0, %o0, %tie_add(foo).
3691 add is 0x80000000 | (rd << 25) | (rs1 << 14) | rs2,
3692 ld is 0xc0000000 | (rd << 25) | (rs1 << 14) | rs2,
3693 ldx is 0xc0580000 | (rd << 25) | (rs1 << 14) | rs2. */
3694 bfd_put_32 (output_bfd, insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000),
3695 contents + rel->r_offset);
3696 bfd_put_32 (output_bfd, 0x9001c008,
3697 contents + rel->r_offset + 4);
3698 rel++;
3699 continue;
3702 /* We cannot just overwrite the delay slot instruction,
3703 as it might be what puts the %o0 argument to
3704 __tls_get_addr into place. So we have to transpose
3705 the delay slot with the add we patch in. */
3706 insn = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3707 bfd_put_32 (output_bfd, insn,
3708 contents + rel->r_offset);
3709 bfd_put_32 (output_bfd, 0x9001c008,
3710 contents + rel->r_offset + 4);
3712 rel2 = rel;
3713 while ((rel2 = sparc_elf_find_reloc_at_ofs (rel2 + 1, relend,
3714 rel->r_offset + 4))
3715 != NULL)
3717 /* If the instruction we moved has a relocation attached to
3718 it, adjust the offset so that it will apply to the correct
3719 instruction. */
3720 rel2->r_offset -= 4;
3722 continue;
3725 h = (struct elf_link_hash_entry *)
3726 bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
3727 false, true);
3728 BFD_ASSERT (h != NULL);
3729 r_type = R_SPARC_WPLT30;
3730 howto = _bfd_sparc_elf_howto_table + r_type;
3731 goto r_sparc_wplt30;
3733 case R_SPARC_TLS_GD_ADD:
3734 if (h != NULL)
3735 tls_type = _bfd_sparc_elf_hash_entry (h)->tls_type;
3736 else if (local_got_offsets)
3737 tls_type = _bfd_sparc_elf_local_got_tls_type (input_bfd) [r_symndx];
3738 else
3739 tls_type = GOT_UNKNOWN;
3740 /* GD -> IE or LE */
3741 if (bfd_link_executable (info) || tls_type == GOT_TLS_IE)
3743 /* add %reg1, %reg2, %reg3, %tgd_add(foo)
3744 changed into IE:
3745 {ld,ldx} [%reg1 + %reg2], %reg3, %tie_ldx(foo)
3746 or LE:
3747 add %g7, %reg2, %reg3. */
3748 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3749 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3750 relocation = (insn & ~0x7c000) | 0x1c000;
3751 else
3752 relocation = insn | (ABI_64_P (output_bfd) ? 0xc0580000 : 0xc0000000);
3753 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3755 continue;
3757 case R_SPARC_TLS_LDM_ADD:
3758 /* LD -> LE */
3759 if (bfd_link_executable (info))
3760 bfd_put_32 (output_bfd, SPARC_NOP, contents + rel->r_offset);
3761 continue;
3763 case R_SPARC_TLS_LDO_ADD:
3764 /* LD -> LE */
3765 if (bfd_link_executable (info))
3767 /* Change rs1 into %g7. */
3768 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3769 insn = (insn & ~0x7c000) | 0x1c000;
3770 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
3772 continue;
3774 case R_SPARC_TLS_IE_LD:
3775 case R_SPARC_TLS_IE_LDX:
3776 /* IE -> LE */
3777 if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
3779 bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
3780 int rs2 = insn & 0x1f;
3781 int rd = (insn >> 25) & 0x1f;
3783 if (rs2 == rd)
3784 relocation = SPARC_NOP;
3785 else
3786 relocation = 0x80100000 | (insn & 0x3e00001f);
3787 bfd_put_32 (output_bfd, relocation, contents + rel->r_offset);
3789 continue;
3791 case R_SPARC_TLS_IE_ADD:
3792 /* Totally useless relocation. */
3793 continue;
3795 case R_SPARC_TLS_DTPOFF32:
3796 case R_SPARC_TLS_DTPOFF64:
3797 relocation -= dtpoff_base (info);
3798 break;
3800 default:
3801 break;
3804 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3805 because such sections are not SEC_ALLOC and thus ld.so will
3806 not process them. */
3807 if (unresolved_reloc
3808 && !((input_section->flags & SEC_DEBUGGING) != 0
3809 && h->def_dynamic)
3810 && _bfd_elf_section_offset (output_bfd, info, input_section,
3811 rel->r_offset) != (bfd_vma) -1)
3812 _bfd_error_handler
3813 /* xgettext:c-format */
3814 (_("%pB(%pA+%#" PRIx64 "): "
3815 "unresolvable %s relocation against symbol `%s'"),
3816 input_bfd,
3817 input_section,
3818 (uint64_t) rel->r_offset,
3819 howto->name,
3820 h->root.root.string);
3822 r = bfd_reloc_continue;
3823 if (r_type == R_SPARC_OLO10)
3825 bfd_vma x;
3827 if (! ABI_64_P (output_bfd))
3828 abort ();
3830 relocation += rel->r_addend;
3831 relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
3833 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3834 x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
3835 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3837 r = bfd_check_overflow (howto->complain_on_overflow,
3838 howto->bitsize, howto->rightshift,
3839 bfd_arch_bits_per_address (input_bfd),
3840 relocation);
3842 else if (r_type == R_SPARC_WDISP16)
3844 bfd_vma x;
3846 relocation += rel->r_addend;
3847 relocation -= (input_section->output_section->vma
3848 + input_section->output_offset);
3849 relocation -= rel->r_offset;
3851 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3852 x |= ((((relocation >> 2) & 0xc000) << 6)
3853 | ((relocation >> 2) & 0x3fff));
3854 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3856 r = bfd_check_overflow (howto->complain_on_overflow,
3857 howto->bitsize, howto->rightshift,
3858 bfd_arch_bits_per_address (input_bfd),
3859 relocation);
3861 else if (r_type == R_SPARC_WDISP10)
3863 bfd_vma x;
3865 relocation += rel->r_addend;
3866 relocation -= (input_section->output_section->vma
3867 + input_section->output_offset);
3868 relocation -= rel->r_offset;
3870 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3871 x |= ((((relocation >> 2) & 0x300) << 11)
3872 | (((relocation >> 2) & 0xff) << 5));
3873 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3875 r = bfd_check_overflow (howto->complain_on_overflow,
3876 howto->bitsize, howto->rightshift,
3877 bfd_arch_bits_per_address (input_bfd),
3878 relocation);
3880 else if (r_type == R_SPARC_REV32)
3882 bfd_vma x;
3884 relocation = relocation + rel->r_addend;
3886 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3887 x = x + relocation;
3888 bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
3889 r = bfd_reloc_ok;
3891 else if (r_type == R_SPARC_TLS_LDO_HIX22
3892 || r_type == R_SPARC_TLS_LE_HIX22)
3894 bfd_vma x;
3896 relocation += rel->r_addend;
3897 if (r_type == R_SPARC_TLS_LE_HIX22)
3898 relocation ^= MINUS_ONE;
3900 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3901 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3902 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3903 r = bfd_reloc_ok;
3905 else if (r_type == R_SPARC_TLS_LDO_LOX10
3906 || r_type == R_SPARC_TLS_LE_LOX10)
3908 bfd_vma x;
3910 relocation += rel->r_addend;
3911 relocation &= 0x3ff;
3912 if (r_type == R_SPARC_TLS_LE_LOX10)
3913 relocation |= 0x1c00;
3915 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3916 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3917 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3919 r = bfd_reloc_ok;
3921 else if (r_type == R_SPARC_HIX22
3922 || r_type == R_SPARC_GOTDATA_HIX22
3923 || r_type == R_SPARC_GOTDATA_OP_HIX22)
3925 bfd_vma x;
3927 relocation += rel->r_addend;
3928 if (r_type == R_SPARC_HIX22
3929 || (bfd_signed_vma) relocation < 0)
3930 relocation = relocation ^ MINUS_ONE;
3932 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3933 x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
3934 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3936 r = bfd_check_overflow (howto->complain_on_overflow,
3937 howto->bitsize, howto->rightshift,
3938 bfd_arch_bits_per_address (input_bfd),
3939 relocation);
3941 else if (r_type == R_SPARC_LOX10
3942 || r_type == R_SPARC_GOTDATA_LOX10
3943 || r_type == R_SPARC_GOTDATA_OP_LOX10)
3945 bfd_vma x;
3947 relocation += rel->r_addend;
3948 if (r_type == R_SPARC_LOX10
3949 || (bfd_signed_vma) relocation < 0)
3950 relocation = (relocation & 0x3ff) | 0x1c00;
3951 else
3952 relocation = (relocation & 0x3ff);
3954 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3955 x = (x & ~(bfd_vma) 0x1fff) | relocation;
3956 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
3958 r = bfd_reloc_ok;
3960 else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
3961 && sec_do_relax (input_section)
3962 && rel->r_offset + 4 < input_section->size)
3964 #define G0 0
3965 #define O7 15
3966 #define XCC (2 << 20)
3967 #define COND(x) (((x)&0xf)<<25)
3968 #define CONDA COND(0x8)
3969 #define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
3970 #define INSN_BA (F2(0,2) | CONDA)
3971 #define INSN_OR F3(2, 0x2, 0)
3972 #define INSN_NOP F2(0,4)
3974 bfd_vma x, y;
3976 /* If the instruction is a call with either:
3977 restore
3978 arithmetic instruction with rd == %o7
3979 where rs1 != %o7 and rs2 if it is register != %o7
3980 then we can optimize if the call destination is near
3981 by changing the call into a branch always. */
3982 x = bfd_get_32 (input_bfd, contents + rel->r_offset);
3983 y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
3984 if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
3986 if (((y & OP3(~0)) == OP3(0x3d) /* restore */
3987 || ((y & OP3(0x28)) == 0 /* arithmetic */
3988 && (y & RD(~0)) == RD(O7)))
3989 && (y & RS1(~0)) != RS1(O7)
3990 && ((y & F3I(~0))
3991 || (y & RS2(~0)) != RS2(O7)))
3993 bfd_vma reloc;
3995 reloc = relocation + rel->r_addend - rel->r_offset;
3996 reloc -= (input_section->output_section->vma
3997 + input_section->output_offset);
3999 /* Ensure the branch fits into simm22. */
4000 if ((reloc & 3) == 0
4001 && ((reloc & ~(bfd_vma)0x7fffff) == 0
4002 || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
4004 reloc >>= 2;
4006 /* Check whether it fits into simm19. */
4007 if (((reloc & 0x3c0000) == 0
4008 || (reloc & 0x3c0000) == 0x3c0000)
4009 && (ABI_64_P (output_bfd)
4010 || elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
4011 x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
4012 else
4013 x = INSN_BA | (reloc & 0x3fffff); /* ba */
4014 bfd_put_32 (input_bfd, x, contents + rel->r_offset);
4015 r = bfd_reloc_ok;
4016 if (rel->r_offset >= 4
4017 && (y & (0xffffffff ^ RS1(~0)))
4018 == (INSN_OR | RD(O7) | RS2(G0)))
4020 bfd_vma z;
4021 unsigned int reg;
4023 z = bfd_get_32 (input_bfd,
4024 contents + rel->r_offset - 4);
4025 if ((z & (0xffffffff ^ RD(~0)))
4026 != (INSN_OR | RS1(O7) | RS2(G0)))
4027 continue;
4029 /* The sequence was
4030 or %o7, %g0, %rN
4031 call foo
4032 or %rN, %g0, %o7
4034 If call foo was replaced with ba, replace
4035 or %rN, %g0, %o7 with nop. */
4037 reg = (y & RS1(~0)) >> 14;
4038 if (reg != ((z & RD(~0)) >> 25)
4039 || reg == G0 || reg == O7)
4040 continue;
4042 bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
4043 contents + rel->r_offset + 4);
4051 if (r == bfd_reloc_continue)
4053 do_relocation:
4054 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4055 contents, rel->r_offset,
4056 relocation, rel->r_addend);
4058 if (r != bfd_reloc_ok)
4060 switch (r)
4062 default:
4063 case bfd_reloc_outofrange:
4064 abort ();
4065 case bfd_reloc_overflow:
4067 const char *name;
4069 /* The Solaris native linker silently disregards overflows.
4070 We don't, but this breaks stabs debugging info, whose
4071 relocations are only 32-bits wide. Ignore overflows in
4072 this case and also for discarded entries. */
4073 if ((r_type == R_SPARC_32
4074 || r_type == R_SPARC_UA32
4075 || r_type == R_SPARC_DISP32)
4076 && (((input_section->flags & SEC_DEBUGGING) != 0
4077 && strcmp (bfd_section_name (input_section),
4078 ".stab") == 0)
4079 || _bfd_elf_section_offset (output_bfd, info,
4080 input_section,
4081 rel->r_offset)
4082 == (bfd_vma)-1))
4083 break;
4085 if (h != NULL)
4087 /* Assume this is a call protected by other code that
4088 detect the symbol is undefined. If this is the case,
4089 we can safely ignore the overflow. If not, the
4090 program is hosed anyway, and a little warning isn't
4091 going to help. */
4092 if (h->root.type == bfd_link_hash_undefweak
4093 && howto->pc_relative)
4094 break;
4096 name = NULL;
4098 else
4100 name = bfd_elf_string_from_elf_section (input_bfd,
4101 symtab_hdr->sh_link,
4102 sym->st_name);
4103 if (name == NULL)
4104 return false;
4105 if (*name == '\0')
4106 name = bfd_section_name (sec);
4108 (*info->callbacks->reloc_overflow)
4109 (info, (h ? &h->root : NULL), name, howto->name,
4110 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
4112 break;
4117 return true;
4120 /* Build a VxWorks PLT entry. PLT_INDEX is the index of the PLT entry
4121 and PLT_OFFSET is the byte offset from the start of .plt. GOT_OFFSET
4122 is the offset of the associated .got.plt entry from
4123 _GLOBAL_OFFSET_TABLE_. */
4125 static void
4126 sparc_vxworks_build_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
4127 bfd_vma plt_offset, bfd_vma plt_index,
4128 bfd_vma got_offset)
4130 bfd_vma got_base;
4131 const bfd_vma *plt_entry;
4132 struct _bfd_sparc_elf_link_hash_table *htab;
4133 bfd_byte *loc;
4134 Elf_Internal_Rela rela;
4136 htab = _bfd_sparc_elf_hash_table (info);
4137 BFD_ASSERT (htab != NULL);
4139 if (bfd_link_pic (info))
4141 plt_entry = sparc_vxworks_shared_plt_entry;
4142 got_base = 0;
4144 else
4146 plt_entry = sparc_vxworks_exec_plt_entry;
4147 got_base = (htab->elf.hgot->root.u.def.value
4148 + htab->elf.hgot->root.u.def.section->output_offset
4149 + htab->elf.hgot->root.u.def.section->output_section->vma);
4152 /* Fill in the entry in the procedure linkage table. */
4153 bfd_put_32 (output_bfd, plt_entry[0] + ((got_base + got_offset) >> 10),
4154 htab->elf.splt->contents + plt_offset);
4155 bfd_put_32 (output_bfd, plt_entry[1] + ((got_base + got_offset) & 0x3ff),
4156 htab->elf.splt->contents + plt_offset + 4);
4157 bfd_put_32 (output_bfd, plt_entry[2],
4158 htab->elf.splt->contents + plt_offset + 8);
4159 bfd_put_32 (output_bfd, plt_entry[3],
4160 htab->elf.splt->contents + plt_offset + 12);
4161 bfd_put_32 (output_bfd, plt_entry[4],
4162 htab->elf.splt->contents + plt_offset + 16);
4163 bfd_put_32 (output_bfd, plt_entry[5] + (plt_index >> 10),
4164 htab->elf.splt->contents + plt_offset + 20);
4165 /* PC-relative displacement for a branch to the start of
4166 the PLT section. */
4167 bfd_put_32 (output_bfd, plt_entry[6] + (((-plt_offset - 24) >> 2)
4168 & 0x003fffff),
4169 htab->elf.splt->contents + plt_offset + 24);
4170 bfd_put_32 (output_bfd, plt_entry[7] + (plt_index & 0x3ff),
4171 htab->elf.splt->contents + plt_offset + 28);
4173 /* Fill in the .got.plt entry, pointing initially at the
4174 second half of the PLT entry. */
4175 BFD_ASSERT (htab->elf.sgotplt != NULL);
4176 bfd_put_32 (output_bfd,
4177 htab->elf.splt->output_section->vma
4178 + htab->elf.splt->output_offset
4179 + plt_offset + 20,
4180 htab->elf.sgotplt->contents + got_offset);
4182 /* Add relocations to .rela.plt.unloaded. */
4183 if (!bfd_link_pic (info))
4185 loc = (htab->srelplt2->contents
4186 + (2 + 3 * plt_index) * sizeof (Elf32_External_Rela));
4188 /* Relocate the initial sethi. */
4189 rela.r_offset = (htab->elf.splt->output_section->vma
4190 + htab->elf.splt->output_offset
4191 + plt_offset);
4192 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4193 rela.r_addend = got_offset;
4194 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4195 loc += sizeof (Elf32_External_Rela);
4197 /* Likewise the following or. */
4198 rela.r_offset += 4;
4199 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4200 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4201 loc += sizeof (Elf32_External_Rela);
4203 /* Relocate the .got.plt entry. */
4204 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4205 + htab->elf.sgotplt->output_offset
4206 + got_offset);
4207 rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4208 rela.r_addend = plt_offset + 20;
4209 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4213 /* Finish up dynamic symbol handling. We set the contents of various
4214 dynamic sections here. */
4216 bool
4217 _bfd_sparc_elf_finish_dynamic_symbol (bfd *output_bfd,
4218 struct bfd_link_info *info,
4219 struct elf_link_hash_entry *h,
4220 Elf_Internal_Sym *sym)
4222 struct _bfd_sparc_elf_link_hash_table *htab;
4223 const struct elf_backend_data *bed;
4224 struct _bfd_sparc_elf_link_hash_entry *eh;
4225 bool resolved_to_zero;
4227 htab = _bfd_sparc_elf_hash_table (info);
4228 BFD_ASSERT (htab != NULL);
4229 bed = get_elf_backend_data (output_bfd);
4231 eh = (struct _bfd_sparc_elf_link_hash_entry *) h;
4233 /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
4234 resolved undefined weak symbols in executable so that their
4235 references have value 0 at run-time. */
4236 resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
4238 if (h->plt.offset != (bfd_vma) -1)
4240 asection *splt;
4241 asection *srela;
4242 Elf_Internal_Rela rela;
4243 bfd_byte *loc;
4244 bfd_vma r_offset, got_offset;
4245 int rela_index;
4247 /* When building a static executable, use .iplt and
4248 .rela.iplt sections for STT_GNU_IFUNC symbols. */
4249 if (htab->elf.splt != NULL)
4251 splt = htab->elf.splt;
4252 srela = htab->elf.srelplt;
4254 else
4256 splt = htab->elf.iplt;
4257 srela = htab->elf.irelplt;
4260 if (splt == NULL || srela == NULL)
4261 abort ();
4263 /* Fill in the entry in the .rela.plt section. */
4264 if (htab->elf.target_os == is_vxworks)
4266 /* Work out the index of this PLT entry. */
4267 rela_index = ((h->plt.offset - htab->plt_header_size)
4268 / htab->plt_entry_size);
4270 /* Calculate the offset of the associated .got.plt entry.
4271 The first three entries are reserved. */
4272 got_offset = (rela_index + 3) * 4;
4274 sparc_vxworks_build_plt_entry (output_bfd, info, h->plt.offset,
4275 rela_index, got_offset);
4278 /* On VxWorks, the relocation points to the .got.plt entry,
4279 not the .plt entry. */
4280 rela.r_offset = (htab->elf.sgotplt->output_section->vma
4281 + htab->elf.sgotplt->output_offset
4282 + got_offset);
4283 rela.r_addend = 0;
4284 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4285 R_SPARC_JMP_SLOT);
4287 else
4289 bool ifunc = false;
4291 /* Fill in the entry in the procedure linkage table. */
4292 rela_index = SPARC_ELF_BUILD_PLT_ENTRY (htab, output_bfd, splt,
4293 h->plt.offset, splt->size,
4294 &r_offset);
4296 if (h == NULL
4297 || h->dynindx == -1
4298 || ((bfd_link_executable (info)
4299 || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4300 && h->def_regular
4301 && h->type == STT_GNU_IFUNC))
4303 ifunc = true;
4304 BFD_ASSERT (h == NULL
4305 || (h->type == STT_GNU_IFUNC
4306 && h->def_regular
4307 && (h->root.type == bfd_link_hash_defined
4308 || h->root.type == bfd_link_hash_defweak)));
4311 rela.r_offset = r_offset
4312 + (splt->output_section->vma + splt->output_offset);
4313 if (ABI_64_P (output_bfd)
4314 && h->plt.offset >= (PLT64_LARGE_THRESHOLD * PLT64_ENTRY_SIZE))
4316 if (ifunc)
4318 rela.r_addend = (h->root.u.def.section->output_section->vma
4319 + h->root.u.def.section->output_offset
4320 + h->root.u.def.value);
4321 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4322 R_SPARC_IRELATIVE);
4324 else
4326 rela.r_addend = (-(h->plt.offset + 4)
4327 - splt->output_section->vma
4328 - splt->output_offset);
4329 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4330 R_SPARC_JMP_SLOT);
4333 else
4335 if (ifunc)
4337 rela.r_addend = (h->root.u.def.section->output_section->vma
4338 + h->root.u.def.section->output_offset
4339 + h->root.u.def.value);
4340 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0,
4341 R_SPARC_JMP_IREL);
4343 else
4345 rela.r_addend = 0;
4346 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx,
4347 R_SPARC_JMP_SLOT);
4352 /* Adjust for the first 4 reserved elements in the .plt section
4353 when setting the offset in the .rela.plt section.
4354 Sun forgot to read their own ABI and copied elf32-sparc behaviour,
4355 thus .plt[4] has corresponding .rela.plt[0] and so on. */
4357 loc = srela->contents;
4358 loc += rela_index * bed->s->sizeof_rela;
4359 bed->s->swap_reloca_out (output_bfd, &rela, loc);
4361 if (!resolved_to_zero && !h->def_regular)
4363 /* Mark the symbol as undefined, rather than as defined in
4364 the .plt section. Leave the value alone. */
4365 sym->st_shndx = SHN_UNDEF;
4366 /* If the symbol is weak, we do need to clear the value.
4367 Otherwise, the PLT entry would provide a definition for
4368 the symbol even if the symbol wasn't defined anywhere,
4369 and so the symbol would never be NULL. */
4370 if (!h->ref_regular_nonweak)
4371 sym->st_value = 0;
4375 /* Don't generate dynamic GOT relocation against resolved undefined weak
4376 symbols in an executable. */
4377 if (h->got.offset != (bfd_vma) -1
4378 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_GD
4379 && _bfd_sparc_elf_hash_entry(h)->tls_type != GOT_TLS_IE
4380 && !(h->root.type == bfd_link_hash_undefweak
4381 && (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4382 || resolved_to_zero)))
4384 asection *sgot;
4385 asection *srela;
4386 Elf_Internal_Rela rela;
4388 /* This symbol has an entry in the GOT. Set it up. */
4390 sgot = htab->elf.sgot;
4391 srela = htab->elf.srelgot;
4392 BFD_ASSERT (sgot != NULL && srela != NULL);
4394 rela.r_offset = (sgot->output_section->vma
4395 + sgot->output_offset
4396 + (h->got.offset &~ (bfd_vma) 1));
4398 /* If this is a -Bsymbolic link, and the symbol is defined
4399 locally, we just want to emit a RELATIVE reloc. Likewise if
4400 the symbol was forced to be local because of a version file.
4401 The entry in the global offset table will already have been
4402 initialized in the relocate_section function. */
4403 if (! bfd_link_pic (info)
4404 && h->type == STT_GNU_IFUNC
4405 && h->def_regular)
4407 asection *plt;
4409 /* We load the GOT entry with the PLT entry. */
4410 plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4411 SPARC_ELF_PUT_WORD (htab, output_bfd,
4412 (plt->output_section->vma
4413 + plt->output_offset + h->plt.offset),
4414 htab->elf.sgot->contents
4415 + (h->got.offset & ~(bfd_vma) 1));
4416 return true;
4419 if (bfd_link_pic (info)
4420 && (h->root.type == bfd_link_hash_defined
4421 || h->root.type == bfd_link_hash_defweak)
4422 && SYMBOL_REFERENCES_LOCAL (info, h))
4424 asection *sec = h->root.u.def.section;
4425 if (h->type == STT_GNU_IFUNC)
4426 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_IRELATIVE);
4427 else
4428 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, 0, R_SPARC_RELATIVE);
4429 rela.r_addend = (h->root.u.def.value
4430 + sec->output_section->vma
4431 + sec->output_offset);
4433 else
4435 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_GLOB_DAT);
4436 rela.r_addend = 0;
4439 SPARC_ELF_PUT_WORD (htab, output_bfd, 0,
4440 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
4441 sparc_elf_append_rela (output_bfd, srela, &rela);
4444 if (h->needs_copy)
4446 asection *s;
4447 Elf_Internal_Rela rela;
4449 /* This symbols needs a copy reloc. Set it up. */
4450 BFD_ASSERT (h->dynindx != -1);
4452 rela.r_offset = (h->root.u.def.value
4453 + h->root.u.def.section->output_section->vma
4454 + h->root.u.def.section->output_offset);
4455 rela.r_info = SPARC_ELF_R_INFO (htab, NULL, h->dynindx, R_SPARC_COPY);
4456 rela.r_addend = 0;
4457 if (h->root.u.def.section == htab->elf.sdynrelro)
4458 s = htab->elf.sreldynrelro;
4459 else
4460 s = htab->elf.srelbss;
4461 sparc_elf_append_rela (output_bfd, s, &rela);
4464 /* Mark some specially defined symbols as absolute. On VxWorks,
4465 _GLOBAL_OFFSET_TABLE_ is not absolute: it is relative to the
4466 ".got" section. Likewise _PROCEDURE_LINKAGE_TABLE_ and ".plt". */
4467 if (sym != NULL
4468 && (h == htab->elf.hdynamic
4469 || (htab->elf.target_os != is_vxworks
4470 && (h == htab->elf.hgot || h == htab->elf.hplt))))
4471 sym->st_shndx = SHN_ABS;
4473 return true;
4476 /* Finish up the dynamic sections. */
4478 static bool
4479 sparc_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
4480 bfd *dynobj, asection *sdyn,
4481 asection *splt ATTRIBUTE_UNUSED)
4483 struct _bfd_sparc_elf_link_hash_table *htab;
4484 const struct elf_backend_data *bed;
4485 bfd_byte *dyncon, *dynconend;
4486 size_t dynsize;
4487 int stt_regidx = -1;
4488 bool abi_64_p;
4490 htab = _bfd_sparc_elf_hash_table (info);
4491 BFD_ASSERT (htab != NULL);
4492 bed = get_elf_backend_data (output_bfd);
4493 dynsize = bed->s->sizeof_dyn;
4494 dynconend = sdyn->contents + sdyn->size;
4495 abi_64_p = ABI_64_P (output_bfd);
4496 for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
4498 Elf_Internal_Dyn dyn;
4499 bool size;
4501 bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
4503 if (htab->elf.target_os == is_vxworks && dyn.d_tag == DT_PLTGOT)
4505 /* On VxWorks, DT_PLTGOT should point to the start of the GOT,
4506 not to the start of the PLT. */
4507 if (htab->elf.sgotplt)
4509 dyn.d_un.d_val = (htab->elf.sgotplt->output_section->vma
4510 + htab->elf.sgotplt->output_offset);
4511 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4514 else if (htab->elf.target_os == is_vxworks
4515 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4516 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4517 else if (abi_64_p && dyn.d_tag == DT_SPARC_REGISTER)
4519 if (stt_regidx == -1)
4521 stt_regidx =
4522 _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
4523 if (stt_regidx == -1)
4524 return false;
4526 dyn.d_un.d_val = stt_regidx++;
4527 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4529 else
4531 asection *s;
4533 switch (dyn.d_tag)
4535 case DT_PLTGOT:
4536 s = htab->elf.splt;
4537 size = false;
4538 break;
4539 case DT_PLTRELSZ:
4540 s = htab->elf.srelplt;
4541 size = true;
4542 break;
4543 case DT_JMPREL:
4544 s = htab->elf.srelplt;
4545 size = false;
4546 break;
4547 default:
4548 continue;
4551 if (s == NULL)
4552 dyn.d_un.d_val = 0;
4553 else
4555 if (!size)
4556 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4557 else
4558 dyn.d_un.d_val = s->size;
4560 bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
4563 return true;
4566 /* Install the first PLT entry in a VxWorks executable and make sure that
4567 .rela.plt.unloaded relocations have the correct symbol indexes. */
4569 static void
4570 sparc_vxworks_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
4572 struct _bfd_sparc_elf_link_hash_table *htab;
4573 Elf_Internal_Rela rela;
4574 bfd_vma got_base;
4575 bfd_byte *loc;
4577 htab = _bfd_sparc_elf_hash_table (info);
4578 BFD_ASSERT (htab != NULL);
4580 /* Calculate the absolute value of _GLOBAL_OFFSET_TABLE_. */
4581 got_base = (htab->elf.hgot->root.u.def.section->output_section->vma
4582 + htab->elf.hgot->root.u.def.section->output_offset
4583 + htab->elf.hgot->root.u.def.value);
4585 /* Install the initial PLT entry. */
4586 bfd_put_32 (output_bfd,
4587 sparc_vxworks_exec_plt0_entry[0] + ((got_base + 8) >> 10),
4588 htab->elf.splt->contents);
4589 bfd_put_32 (output_bfd,
4590 sparc_vxworks_exec_plt0_entry[1] + ((got_base + 8) & 0x3ff),
4591 htab->elf.splt->contents + 4);
4592 bfd_put_32 (output_bfd,
4593 sparc_vxworks_exec_plt0_entry[2],
4594 htab->elf.splt->contents + 8);
4595 bfd_put_32 (output_bfd,
4596 sparc_vxworks_exec_plt0_entry[3],
4597 htab->elf.splt->contents + 12);
4598 bfd_put_32 (output_bfd,
4599 sparc_vxworks_exec_plt0_entry[4],
4600 htab->elf.splt->contents + 16);
4602 loc = htab->srelplt2->contents;
4604 /* Add an unloaded relocation for the initial entry's "sethi". */
4605 rela.r_offset = (htab->elf.splt->output_section->vma
4606 + htab->elf.splt->output_offset);
4607 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4608 rela.r_addend = 8;
4609 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4610 loc += sizeof (Elf32_External_Rela);
4612 /* Likewise the following "or". */
4613 rela.r_offset += 4;
4614 rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4615 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
4616 loc += sizeof (Elf32_External_Rela);
4618 /* Fix up the remaining .rela.plt.unloaded relocations. They may have
4619 the wrong symbol index for _G_O_T_ or _P_L_T_ depending on the order
4620 in which symbols were output. */
4621 while (loc < htab->srelplt2->contents + htab->srelplt2->size)
4623 Elf_Internal_Rela rel;
4625 /* The entry's initial "sethi" (against _G_O_T_). */
4626 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4627 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_HI22);
4628 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4629 loc += sizeof (Elf32_External_Rela);
4631 /* The following "or" (also against _G_O_T_). */
4632 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4633 rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_SPARC_LO10);
4634 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4635 loc += sizeof (Elf32_External_Rela);
4637 /* The .got.plt entry (against _P_L_T_). */
4638 bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
4639 rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_SPARC_32);
4640 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4641 loc += sizeof (Elf32_External_Rela);
4645 /* Install the first PLT entry in a VxWorks shared object. */
4647 static void
4648 sparc_vxworks_finish_shared_plt (bfd *output_bfd, struct bfd_link_info *info)
4650 struct _bfd_sparc_elf_link_hash_table *htab;
4651 unsigned int i;
4653 htab = _bfd_sparc_elf_hash_table (info);
4654 BFD_ASSERT (htab != NULL);
4656 for (i = 0; i < ARRAY_SIZE (sparc_vxworks_shared_plt0_entry); i++)
4657 bfd_put_32 (output_bfd, sparc_vxworks_shared_plt0_entry[i],
4658 htab->elf.splt->contents + i * 4);
4661 /* Finish up local dynamic symbol handling. We set the contents of
4662 various dynamic sections here. */
4664 static int
4665 finish_local_dynamic_symbol (void **slot, void *inf)
4667 struct elf_link_hash_entry *h
4668 = (struct elf_link_hash_entry *) *slot;
4669 struct bfd_link_info *info
4670 = (struct bfd_link_info *) inf;
4672 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4673 h, NULL);
4676 /* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
4677 here since undefined weak symbol may not be dynamic and may not be
4678 called for _bfd_sparc_elf_finish_dynamic_symbol. */
4680 static bool
4681 pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
4682 void *inf)
4684 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
4685 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4687 if (h->root.type != bfd_link_hash_undefweak
4688 || h->dynindx != -1)
4689 return true;
4691 return _bfd_sparc_elf_finish_dynamic_symbol (info->output_bfd, info,
4692 h, NULL);
4695 bool
4696 _bfd_sparc_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
4698 bfd *dynobj;
4699 asection *sdyn;
4700 struct _bfd_sparc_elf_link_hash_table *htab;
4702 htab = _bfd_sparc_elf_hash_table (info);
4703 BFD_ASSERT (htab != NULL);
4704 dynobj = htab->elf.dynobj;
4706 /* We arranged in size_dynamic_sections to put the STT_REGISTER
4707 entries at the end of the dynlocal list, so they came at the end
4708 of the local symbols in the symtab. Except that they aren't
4709 STB_LOCAL, so we need to back up symtab->sh_info. */
4710 if (ABI_64_P (output_bfd)
4711 && elf_hash_table (info)->dynlocal)
4713 asection *dynsymsec = bfd_get_linker_section (dynobj, ".dynsym");
4714 struct elf_link_local_dynamic_entry *e;
4716 for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
4717 if (e->input_indx == -1)
4718 break;
4719 if (e)
4720 elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
4721 = e->dynindx;
4724 sdyn = bfd_get_linker_section (dynobj, ".dynamic");
4726 if (elf_hash_table (info)->dynamic_sections_created)
4728 asection *splt;
4730 splt = htab->elf.splt;
4731 BFD_ASSERT (splt != NULL && sdyn != NULL);
4733 if (!sparc_finish_dyn (output_bfd, info, dynobj, sdyn, splt))
4734 return false;
4736 /* Initialize the contents of the .plt section. */
4737 if (splt->size > 0)
4739 if (htab->elf.target_os == is_vxworks)
4741 if (bfd_link_pic (info))
4742 sparc_vxworks_finish_shared_plt (output_bfd, info);
4743 else
4744 sparc_vxworks_finish_exec_plt (output_bfd, info);
4746 else
4748 memset (splt->contents, 0, htab->plt_header_size);
4749 if (!ABI_64_P (output_bfd))
4750 bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
4751 splt->contents + splt->size - 4);
4755 if (elf_section_data (splt->output_section) != NULL)
4756 elf_section_data (splt->output_section)->this_hdr.sh_entsize
4757 = ((htab->elf.target_os == is_vxworks
4758 || !ABI_64_P (output_bfd))
4759 ? 0 : htab->plt_entry_size);
4762 /* Set the first entry in the global offset table to the address of
4763 the dynamic section. */
4764 if (htab->elf.sgot && htab->elf.sgot->size > 0)
4766 bfd_vma val = (sdyn ?
4767 sdyn->output_section->vma + sdyn->output_offset :
4770 SPARC_ELF_PUT_WORD (htab, output_bfd, val, htab->elf.sgot->contents);
4773 if (htab->elf.sgot)
4774 elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize =
4775 SPARC_ELF_WORD_BYTES (htab);
4777 /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */
4778 htab_traverse (htab->loc_hash_table, finish_local_dynamic_symbol, info);
4780 /* Fill PLT entries for undefined weak symbols in PIE. */
4781 if (bfd_link_pie (info))
4782 bfd_hash_traverse (&info->hash->table,
4783 pie_finish_undefweak_symbol,
4784 info);
4785 return true;
4789 /* Set the right machine number for a SPARC ELF file. */
4791 bool
4792 _bfd_sparc_elf_object_p (bfd *abfd)
4794 obj_attribute *attrs = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
4795 obj_attribute *hwcaps = &attrs[Tag_GNU_Sparc_HWCAPS];
4796 obj_attribute *hwcaps2 = &attrs[Tag_GNU_Sparc_HWCAPS2];
4798 unsigned int v9c_hwcaps_mask = ELF_SPARC_HWCAP_ASI_BLK_INIT;
4799 unsigned int v9d_hwcaps_mask = (ELF_SPARC_HWCAP_FMAF
4800 | ELF_SPARC_HWCAP_VIS3
4801 | ELF_SPARC_HWCAP_HPC);
4802 unsigned int v9e_hwcaps_mask = (ELF_SPARC_HWCAP_AES
4803 | ELF_SPARC_HWCAP_DES
4804 | ELF_SPARC_HWCAP_KASUMI
4805 | ELF_SPARC_HWCAP_CAMELLIA
4806 | ELF_SPARC_HWCAP_MD5
4807 | ELF_SPARC_HWCAP_SHA1
4808 | ELF_SPARC_HWCAP_SHA256
4809 | ELF_SPARC_HWCAP_SHA512
4810 | ELF_SPARC_HWCAP_MPMUL
4811 | ELF_SPARC_HWCAP_MONT
4812 | ELF_SPARC_HWCAP_CRC32C
4813 | ELF_SPARC_HWCAP_CBCOND
4814 | ELF_SPARC_HWCAP_PAUSE);
4815 unsigned int v9v_hwcaps_mask = (ELF_SPARC_HWCAP_FJFMAU
4816 | ELF_SPARC_HWCAP_IMA);
4817 unsigned int v9m_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC5
4818 | ELF_SPARC_HWCAP2_MWAIT
4819 | ELF_SPARC_HWCAP2_XMPMUL
4820 | ELF_SPARC_HWCAP2_XMONT);
4821 unsigned int m8_hwcaps2_mask = (ELF_SPARC_HWCAP2_SPARC6
4822 | ELF_SPARC_HWCAP2_ONADDSUB
4823 | ELF_SPARC_HWCAP2_ONMUL
4824 | ELF_SPARC_HWCAP2_ONDIV
4825 | ELF_SPARC_HWCAP2_DICTUNP
4826 | ELF_SPARC_HWCAP2_FPCMPSHL
4827 | ELF_SPARC_HWCAP2_RLE
4828 | ELF_SPARC_HWCAP2_SHA3);
4830 if (ABI_64_P (abfd))
4832 unsigned long mach = bfd_mach_sparc_v9;
4834 if (hwcaps2->i & m8_hwcaps2_mask)
4835 mach = bfd_mach_sparc_v9m8;
4836 else if (hwcaps2->i & v9m_hwcaps2_mask)
4837 mach = bfd_mach_sparc_v9m;
4838 else if (hwcaps->i & v9v_hwcaps_mask)
4839 mach = bfd_mach_sparc_v9v;
4840 else if (hwcaps->i & v9e_hwcaps_mask)
4841 mach = bfd_mach_sparc_v9e;
4842 else if (hwcaps->i & v9d_hwcaps_mask)
4843 mach = bfd_mach_sparc_v9d;
4844 else if (hwcaps->i & v9c_hwcaps_mask)
4845 mach = bfd_mach_sparc_v9c;
4846 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4847 mach = bfd_mach_sparc_v9b;
4848 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4849 mach = bfd_mach_sparc_v9a;
4850 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
4852 else
4854 if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
4856 if (hwcaps2->i & m8_hwcaps2_mask)
4857 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4858 bfd_mach_sparc_v8plusm8);
4859 else if (hwcaps2->i & v9m_hwcaps2_mask)
4860 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4861 bfd_mach_sparc_v8plusm);
4862 else if (hwcaps->i & v9v_hwcaps_mask)
4863 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4864 bfd_mach_sparc_v8plusv);
4865 else if (hwcaps->i & v9e_hwcaps_mask)
4866 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4867 bfd_mach_sparc_v8pluse);
4868 else if (hwcaps->i & v9d_hwcaps_mask)
4869 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4870 bfd_mach_sparc_v8plusd);
4871 else if (hwcaps->i & v9c_hwcaps_mask)
4872 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4873 bfd_mach_sparc_v8plusc);
4874 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
4875 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4876 bfd_mach_sparc_v8plusb);
4877 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
4878 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4879 bfd_mach_sparc_v8plusa);
4880 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
4881 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4882 bfd_mach_sparc_v8plus);
4883 else
4884 return false;
4886 else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
4887 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
4888 bfd_mach_sparc_sparclite_le);
4889 else
4890 return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
4894 /* Return address for Ith PLT stub in section PLT, for relocation REL
4895 or (bfd_vma) -1 if it should not be included. */
4897 bfd_vma
4898 _bfd_sparc_elf_plt_sym_val (bfd_vma i, const asection *plt, const arelent *rel)
4900 if (ABI_64_P (plt->owner))
4902 bfd_vma j;
4904 i += PLT64_HEADER_SIZE / PLT64_ENTRY_SIZE;
4905 if (i < PLT64_LARGE_THRESHOLD)
4906 return plt->vma + i * PLT64_ENTRY_SIZE;
4908 j = (i - PLT64_LARGE_THRESHOLD) % 160;
4909 i -= j;
4910 return plt->vma + i * PLT64_ENTRY_SIZE + j * 4 * 6;
4912 else
4913 return rel->address;
4916 /* Merge backend specific data from an object file to the output
4917 object file when linking. */
4919 bool
4920 _bfd_sparc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
4922 bfd *obfd = info->output_bfd;
4923 obj_attribute *in_attr, *in_attrs;
4924 obj_attribute *out_attr, *out_attrs;
4926 if (!elf_known_obj_attributes_proc (obfd)[0].i)
4928 /* This is the first object. Copy the attributes. */
4929 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4931 /* Use the Tag_null value to indicate the attributes have been
4932 initialized. */
4933 elf_known_obj_attributes_proc (obfd)[0].i = 1;
4935 return true;
4938 in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
4939 out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
4941 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS];
4942 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS];
4944 out_attr->i |= in_attr->i;
4945 out_attr->type = 1;
4947 in_attr = &in_attrs[Tag_GNU_Sparc_HWCAPS2];
4948 out_attr = &out_attrs[Tag_GNU_Sparc_HWCAPS2];
4950 out_attr->i |= in_attr->i;
4951 out_attr->type = 1;
4953 /* Merge Tag_compatibility attributes and any common GNU ones. */
4954 _bfd_elf_merge_object_attributes (ibfd, info);
4956 return true;